I do support abortion, it's on the ballot in my state and I'll be voting yes!
I picked abortion to comment on because it's the biggest issue amongst most American voters (in my eyes), abortion will get people to vote in general and that likely includes voting for a president.
I think I failed to convey my original point. The comment I responded to said this will be the lowest-turnout election in history and Biden will lose.
Because abortion is actually going to be on the ballot in numerous states I think this may be one of the highest turnouts ever, and I think the people turning up to vote yes on protecting abortion will also vote for Biden, regardless of what he actually does for abortion.
Fingers crossed if he wins they will actually make it federal law, but that's not what I meant when I said abortion is on the ballot.