http://www.google.co.jp/logos/japanelections09.gif

...and landing page for Japanese election 2009: http://www.google.co.jp/intl/ja/landing/senkyo2009/#utm_medium=hpp

The first hit when clicking the Doodle is from Google News ;
http://www.hab.co.jp/headline/news0000003783.html

This must be the third time this election doodle was used, the logo was also used in the US and Israel, only this time the 'vote' button is not in it.