Welcome to From the Politics Desk , a daily newsletter that brings you the NBC News Politics team’s latest reporting and analysis from the White House, Capitol Hill and the campaign trail. It’s yet another primary day, with voters in four states heading to the polls. Steve Kornacki zeroes in on Maine, where Graham Platner has faced a series of controversies heading into the Democratic Senate primary. Plus, Jane C. Timm digs into the unfounded election fraud claims that are flooding California.