Predictit.org is showing that the market for Feinstein winning the senate race is .85 YES and .15 NO. She still has the support of the donor class, and along with her entrenched support base throughout the state, that will be too much for DeLeon to compete with. Boomers love Feinstein, and at this point, the role of the boomers in the California electorate will be enough to carry the election for her.
But the schism that's forming in the Democratic party should be concerning for the party leadership. It's perfectly exemplified by the CA senate race. The party is becoming so consumed by racial identity politics and Marxist economic policies that they are going after some of their most senior members like Feinstein. This move hard to the left will only further alienate White working class Democrat voters, many of whom voted for Obama in 2008 and 2012, but voted Trump in 2016. If the Democrats keep pushing their anti-White agenda and demographic replacement, while concurrently pushing Marxist economic policies, then we could see an even bigger Trump victory in 2020. Identity politics are not winning issues on a national level. If Democrats want to win the White House in 2020 they need to get back to bread and butter issues that resonate on main street. Joe Biden would actually be a formidable opponent for Trump. But instead they'll probably run Kamala Harris, Cory Booker, or even Hillary Clinton again, and all of those candidates will get blown out on election day.