A worker puts up a Popular Party electoral banner near the headquarters of Spain's largest nationalised bank Bankia (R) in Madrid, Spain, May 20, 2015. From coalitions to chaos, local elections taking place on Sunday in Spain are set to draw a fragmented and complex political map that could sap the country's stability and hurt Prime Minister Mariano Rajoy's bid to win reelection later this year. REUTERS/Susana Vera