As to men in women's sports, there is not much left but to rule it out altogether. The States are the ones who make the detailled rules about it, they already, for instance can make rules about relative physical strength, for instance or about post-pubescent transitionals.
Certain states have passed laws pertaining to it, yes...but where is national discourse at on the subject?
For instance, if I were to talk to someone on the farther left-hand side of the spectrum, would they say that their ideal candidates would be for or against passing laws at a federal level that override the red-state laws that have restricted certain aspects with regards to this conversation?
While it would appear, the overall window has shifted on the subject across the board:
(showing that the tide is turning)
Given that 47% of Democrats are still suggesting that it should be allowed, we're not just talking about a "fringe few" people here.
But now that the people who support the concept among democrats has dropped from 55% down to 47%, it's now much closer to an even split, which then makes it much more possible to be on "the wrong side of that issue" now in ways that can lose a democratic candidate some needed support if the candidate themselves has the same position on the issue in 2023 that they had in 2021.
If just a smidge under half of democrats supports it now, and the most vocal portion of that base are saying "anyone who opposes this is a transphobic bigot" (whilst holding a Harris Walz sign), they could be potentially alienating some of that 48%.
The republicans have a much easier time traversing that particular issue, as their position has grown in support across all 3 categories. 93% of their own base, and 67% of independents are in alignment on it. So it was pretty clear which way they needed to go on it.
For Democrats, the choice was much tougher. "Do we tick off the 47% and some of the undecideds? or do we tick off the 48% and some of the independents?
So in addition to what I mentioned earlier (about how it's terribly strategy to make the other party's slippery slope argument come true), I guess we can add another major blunder to the list of ones to avoid.
Which is, "don't go all in on an ideological position for which your own party only has a 52-48 majority opinion among the ranks" (because that's well within the window that can flip the other way pretty quickly)
I think that's a mistake that republicans made on abortion, they didn't pay for it at the polls, but it still highlighted the error. When only 54% of their own party wanted strict limits on it, that wasn't a strong enough majority among their ranks to go "all in". (as we saw red states passing pro-choice ballot measures in response)
Republicans were only saved from the consequences of that by the fact that states just handled it themselves and took the issue off the table for a lot of people, had they not, that likely could've been the winning issue for Harris.