California Democrat Rep. Adam Schiff spent years in the media limelight pushing false theories against former President Donald Trump, some of which led to Trump’s first impeachment.

Now, as a potential candidate for Senate to replace the late Sen. Dianne Feinstein, Schiff is under a different kind of spotlight, and what it’s showing might not be good for his Senate bid.

So far, Schiff has emerged as the frontrunner to replace Feinstein, with fellow Democrat Rep. Katie Porter of Southern California in second place.

A survey conducted by the University of California, Berkeley found that among likely voters, Schiff received 20% of the vote and Porter received 17%. One-third or so of those asked were unsure which option they preferred. Sixteen people have declared at least some interest in running for the position.