Politicians either supporting or opposing abortion has no impact on either the SCOTUS (at least 7 justices are pro-Roe, if not 8 - even Republican appointees are 70% likely to support Roe when they finally vote on it) or the much needed federal law changing constitutional personhood to some point earlier than viability.  Such a law, of course, would have most people consider the issue settled, so no one would vote on abortion as an issue ever again.  As far as gay marriage - its constitutionally protected, politicians supporting or opposing it have no impact.  Scalia was the only justice against and he died.

The current legal framework requires that people actually say they don't want to cover contraception.  Not too much to ask.

Go ahead and say you voted for Trump because of life issues, however.  If enough do, it will set the movement back 50 years.