Japan votes in national election in first key test for new prime minister

A voter casts a ballot in the lower house elections as representatives of a local election administration commission observes at a polling station in Tokyo (Eugene Hoshiko/AP)

Japanese voters are casting ballots in national elections on Sunday in the first big test for new prime minister Fumio Kishida.

Up for grabs are 465 seats in the lower house, the more powerful of the two-chamber Japanese Diet, or parliament.