People are still in shock and angry over the 2015 Obergefell decision on marriage and it will be an issue that will still resonate those feelings with voters this November.
If Trump highlights the gay marriage decision and promises to appoint Justices that will overturn Obergefell, Trump will win by a large margin.
We have to force the narrative back to state-recognized marriage as a matter of reproduction.
There’s an objective difference with hetero unions: based on just those literal two bits of info (male and female) we know that the pairing will tend to procreate. Any other combination won’t, ever.
They already had marriage equality. Homosexuals could marry under the same criteria as heterosexuals. Neither could marry a member of the same sex.