A combination photo shows possible successors to Japanese Prime Minister Yukio Hatoyama; (L-R) Kazuhiro Haraguchi, Yoshito Sengoku, Seiji Maehara, Naoto Kan and Katsuya Okada. Hatoyama said on June 2, 2010, he and his powerful party No. 2, Ichiro Ozawa, would resign after a slide in the polls threatened their party's chances in an election expected next month. REUTERS/Staff/Files (JAPAN - Tags: POLITICS)