Let's recap just this past week.
Trump bragged about getting rid of Roe.
Then he said abortion should be left to the states because he wants to win the election (I'm not making this up).
Trump said Democrats believe in executions of newborns (again I'm not joking).
Then when Arizona's Supreme Court reinstated a law from 1864 to ban abortion, Trump backtracked. Because again he wants to win the election to avoid prison. Arizona Republicans for their part blocked Democrats' attempts to get rid of the law.
Meanwhile Biden has been unequivocal in his support for abortion rights.