Perhaps the strongest contender is the former CNBC host Michelle Caruso-Cabrera, a former registered Republican who is running in the Democratic primary and has raised almost $1 million.
Caruso-Cabrera renounced several of the positions she took in her 2010 book promoting fiscal conservatism.
She told Insider in a recent interview that, if she could go back, she would have "written that book differently.".
Rep. Alexandria Ocasio-Cortez, the freshman progressive from New York, is facing more than a dozen challengers in her reelection race this year.
Insider found that Caruso-Cabrera and her husband recently lived in an apartment in Trump International Hotel and Tower at Columbus Circle in Manhattan for several years.
Ocasio-Cortez has similarly zeroed in on the local and federal response efforts, raising funds and distributing supplies in her district.
And then as you grow older you realize those ideas can be brittle and they break," she said. »