A voter marks his ballot inside a booth at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters gather to sanitise their hands at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters sanitise their hands at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters gather to sanitise at a polling centre during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A voter is seen after marking his ballot in a booth at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A voter carries her child as she waits at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A voter carries her child as she casts her ballot at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A voter carries her child as she waits at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19), in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters gather to sanitise at a polling centre during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A child stands by voters at a polling station during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19) spread, in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A voter casts her ballot at a polling centre during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19), in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters queue to cast their ballots at a polling centre during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19), in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

Voters queue to cast their ballots at a polling centre during the Presidential, Legislative and Communal council elections, under the simmering political violence and the growing threat of the coronavirus disease (COVID-19), in Gitega, Burundi May 20, 2020. REUTERS/Evrard Ngendakumana

A volunteer poll worker sprays sanitizer onto the hands of a voter after casting a ballot, at the Edmondson Westside High School Polling site, during the special election for Marylands 7th congressional district seat, previously held by Rep. Elijah Cummings (D-MD), in Baltimore, Maryland, U.S., April 28, 2020. REUTERS/Tom Brenner

Members of the hygiene team clean stations as voters vote at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Voters cast their ballots for the presidential primary elections at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

A Voter fills out a provisional ballot authorisation form for the presidential primary elections at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election employees Rolland Gamino and Tony Nguyen direct traffic outside of the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Marissa Payne, a member of the hygiene team, cleans a station at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Voter Earnest Bridgewater gets directions from precinct official Tudor Fernando at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Voters cast their ballots for the presidential primary elections at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon TPX IMAGES OF THE DAY

Franklin County Board of Election absentee clerks Gene Shell and Katrina McReynlods work on scanning absentee ballots for the presidential primary elections at the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election absentee clerk Brady Galliers loads absentee ballots for the presidential primary elections into a machine to open them at the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election absentee clerk Seth Golding gathers absentee ballots for the presidential primary elections into a machine to open them at the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election absentee clerks Gene Shell and Katrina McReynlods work on scanning absentee ballots for the presidential primary elections at the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

A machine at the Franklin County Board of Elections opens absentee ballots for the presidential primary elections, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election absentee clerks Karen Griffith and Deborah Pearson get absentee ballots for the presidential primary elections ready to be scanned at the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Franklin County Board of Election employee Kulay Mah-Brown receives an absentee ballot from a voter outside of the board of election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

Signs are seen at the Franklin County Board of Election office, following the coronavirus disease (COVID-19) outbreak in Columbus, Ohio, U.S., April 28, 2020. REUTERS/Paul Vernon

A lone empty polling booth for voters in self-isolation is seen outside a main polling station during the parliamentary election, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

An electoral worker wearing a face mask waits as voters fill in ballots at polling booths during the parliamentary election, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

Voters wearing face masks in an effort to prevent the spread of the coronavirus disease (COVID19) wait in line to cast their ballots at a polling station during the parliamentary election in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

Voters wearing face masks in an effort to prevent the spread of the coronavirus disease (COVID19) wait in line to cast their ballots at a polling station during the parliamentary election in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A voter gets her temperature taken at a polling station during the parliamentary election, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A child wearing a face mask gets her temperature taken as voters wait to cast their ballots at a polling station during the parliamentary election, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

Voters wearing masks in an effort to prevent the spread of the coronavirus disease (COVID19) cast a ballot at a polling station during the parliamentary election in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

Voters wearing masks in an effort to prevent the spread of the coronavirus disease (COVID19) wait in line to cast their ballots at a polling station during the parliamentary election in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A dog waits in line with voters wearing face masks, queuing to cast their ballots at a polling station, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A woman wearing a face mask in an effort to prevent the spread of the coronavirus disease (COVID19), walks past a voter at a polling booth in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A voter wearing plastic gloves casts a ballot at a polling station during the parliamentary election, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A boy wearing a face mask stands in line with his parents as voters wait to cast their ballots at a polling station, amid the coronavirus disease (COVID19) pandemic, in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji

A woman walks past a queue of voters wearing masks, in an effort to prevent the spread of the coronavirus disease (COVID19), while waiting to cast their ballots at a polling station in Seoul, South Korea, April 15, 2020. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY

Employees from a disinfection service company sanitise a polling booth for voters who are self isolated for upcoming parliamentary election in Seoul, South Korea, April 14, 2020. REUTERS/Kim Hong-Ji

Employees from a disinfection service company sanitise a polling booth for voters who are self isolated for upcoming parliamentary election in Seoul, South Korea, April 14, 2020. REUTERS/Kim Hong-Ji

A woman wearing a mask to prevent contracting the coronavirus leaves a voting booth to cast her absentee ballot for the parliamentary election at a polling station in Seoul, South Korea, April 10, 2020. REUTERS/Heo Ran

People wearing masks to prevent contracting the coronavirus keep social distance as they wait to cast their absentee ballots for the parliamentary election at a polling station in Seoul, South Korea, April 10, 2020. REUTERS/Heo Ran

A poll worker, wearing a mask and gloves to prevent the further spread of the coronavirus, hands out a voting pass to a voter, allowing him to cast his ballot for the upcoming parliamentary election, at a polling station in Seoul, South Korea, April 10, 2020. REUTERS/Heo Ran

A woman wearing a mask to prevent contracting the coronavirus leaves a voting booth to cast her absentee ballot for the parliamentary election at a polling station in Seoul, South Korea, April 10, 2020. REUTERS/Heo Ran

Voter Steve Merriweather waits to vote inside Riverside University High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Aaron Lipski, assistant chief for the City of Milwaukee Fire Department, stands in a tyvec suit as he monitors health an safety at a polling station inside Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19), outbreak in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Friends Gigi Kliesmet, Johanna Rose, and Ellie Jackson sit outside a home as they play music for people waiting in line outside a polling station at Riverside University High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Poll workers stand inside Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Voters fill out ballots at Riverside University High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

A voter wearing a respirator waits to enter a polling station at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Voters Jeff Tragitz, right, and Lori Walter kiss while wearing mask masks as they wait in line outside a polling station at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker TPX IMAGES OF THE DAY

An election worker walks between lines of voters at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

An election worker signals an open check-in table inside a polling station at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Election workers talk as curbside ballots are exchanged through an open window in a polling station at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

Jennifer Archer waits to enter a polling station at Hamilton High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker

A member of the Wisconsin National Guard who declined identification dispenses hand sanitiser to a voter entering a polling station at Douglas High School during the presidential primary election, held amid the coronavirus disease (COVID-19) outbreak, in Milwaukee, Wisconsin, U.S., April 7, 2020. REUTERS/Daniel Acker