On Tuesday, Israeli voters will choose their next prime minister. Former leader Benjamin Netanyahu is locked in a tight race with Tzipi Livni, the standard bearer for the incumbent Kadima party. So what are the main messages from these candidates? How has the recent fighting in Gaza impacted the race? And how much is the unpopularity of the previous prime minister likely to influence the vote? We ask Josh Goodman, director of research at the Foundation for the Defense of Democracies.