In theory, Democrats hoping to win back congressional control have two of their best shots in California, where two Republicans are retiring from racially diverse districts that have been trending against the GOP. It's actually a lot more complicated. There are 13 Democrats running to replace Reps. Ed Royce (R-Fullerton) and Darrell Issa (R-Vista) in the 39th and 49th congressional districts, and Democrats are panicked the top-two primary could prevent them from even making the November ballot. When Royce and Issa said they would head to the exits, that invited new candidacies from multiple Republicans, many with more experience than the Democratic contenders.

Source: Los Angeles Times March 19, 2018 23:15 UTC