The Dems need to run candidates who are credible on economic matters, who can appeal to a cross section of swing voters. Both parties cater to their base and the Dems in particular showed just how out of touch they were with swing voters in the last election.
Which means the Dems will run people who want to re-litigate trans folks in sports.
Yeah, this could be easy. But historically, they love making shit harder on themselves.