JENNIFER MEDINA: I think it’s fair to say: Downright terrible.

For the first time in a century, no Republican will be on the ballot for the state’s Senate seat. No Republican even approached 10 percent of the total vote, and the top three combined received less than a million votes.

Now, part of the problem for the Republicans was a very crowded ballot — there were more than 34 candidates, a dozen of them Republicans — so whatever support they might have had was divvied up into tiny slices. But judging by last night’s results, even if the party had unified around one candidate, they would have had a hard time making the ballot. This is probably not what Duf Sundheim, a former state party chairman who won 8 percent of the vote last night, had in mind when he backed California’s move to an open primary system in 2010.

NAGOURNEY: No doubt about that. If I’m reading our results correctly, Loretta Sanchez, the Democrat who came in second behind Kamala Harris, got 18.3 percent of the vote — which is more than the three Republicans behind her got combined. Oof. Last time I checked, Republicans made up 24 percent of the electorate; Democrats made up 44 percent. The state party chairman, Jim Brulte, told me that he expected that disparity to get worse this year because Democrats, unlike Republicans, have a contested primary. At this rate, people who don’t register with either party may someday outnumber Republicans.

A lot of people here say that the state party’s downfall should be a cautionary lesson for national Republicans: that it all began when Republican leaders, including Gov. Pete Wilson, championed Proposition 187, a voter initiative in 1994 that would have cut off benefits for illegal immigrants. The initiative, which passed, was thrown out in court, but the damage was done. Does that make sense to you? How much of a big deal do you think Latino voters are here, and how much trouble is the Republican Party in with that part of the electorate?

MEDINA: Almost every Republican and Democrat I talk to in the state points to that anti-immigrant initiative as the beginning of the end for Republicans here. Latinos are nearing 40 percent of the total population in California and by all accounts are registering in record numbers, no doubt largely driven by Mr. Trump’s anti-immigrant rhetoric. There’s really a sense of “Republicans don’t want us” among many immigrants, not just Latinos. Republican leaders here know that and have been making serious efforts to attract Latino and Asian moderates to run in local races, with some success. But they know that the fall election is going to make that job much, much harder, and it has to have them nervous about the potential for their further demise here.