CNN is reporting that California State Senator Kevin de Leon will run for U.S. Senate next year. He is leader of the State Senate, and a Democrat. See this story. Because incumbent U.S. Senator Dianne Feinstein is running for re-election next year, and because no well-known Republican has announced for this seat, if the CNN story is true, it is likely that California’s top-two system will again produce a general election ballot for U.S. Senate with only two Democrats. Write-ins are not allowed, so just as in 2016, voters who don’t wish to vote for a Democrat in 2018 will not be able to vote for that office at all. Thanks to Political Wire for the link.