The religious right supported the election of Trump.
Trump is the first president to be elected as a known supporter of gay "marriage"
By electing Trump, the acceptance of gay "marriage" is now the accepted norm of the GOP. It will be nearly impossible to get that toothpaste back in the tube
This is one of the reasons I preferred Cruz to Trump and then Castle to Trump.
Other reasons were his known philandering (which has become a problem)
and his crude demeanor (which is a problem sporadically)
and we still have no prospects of a complete border wall (over-promised)
But Trump was elected with the support of the religious right.