AP Explains: Israel's parliamentary elections

Israel is holding the country's 21st parliamentary elections on Tuesday, with over 6.3 million people eligible to cast ballots in a vote largely seen as a referendum on long-seated Prime Minister Benjamin Netanyahu.Netanyahu is seeking his fourth consecutive term and fifth overall, including an earlier stint in the 1990s.With another victory, Netanyahu will secure a place in history later this year as the longest-serving prime minister, surpassing Israel's founding father David Ben-Gurion.