And her health has been failing recently, which has been a big problem for operations in the Senate (judicial appointments have stalled as there is now no party majority on the judiciary committee). She claims she will still serve the rest of her term, but I think there's a decent chance she'll eventually see the light and step down within the next few months. (Though this might just be wishful thinking on my part.)

The downside there is that Gov. Newsom then gets to appoint someone to serve the rest of her term, and then will have the incumbent advantage in 2024, even if they turn out to be not that great. But I think that's probably preferable to the current situation.