He stayed in the race way after he was mathematically eliminated. Endorsing two weeks before the primary is way too late. His support for her in the race was tepid at best. If he really thought it was important that she defeat Trump, he could've done a lot more.
It's a shame that Lord Buckethead and Count Binface can't work a deal out and stand down for the other candidate. Now they're gonna split the vote and BoJo will cruise to re-election.
The California Democratic Party endorsed Kevin De Leon. I must say, I don't like it when the party tries to interfere and handpick their own candidate, but I am confident that The People will go against The Establishment and elect Dianne Feinstein in November.