It's a sad day for this once noble party. This wouldn't fly in the Democrat party of my grandma and other New Dealers. It wouldnt fly in the vein of my idealogical ancestry of the Bourben wing of the party led by Grover Cleveland. I'm also sure Jefferson, Madison, Monroe and Andrew Jackson would flip out on the Democrats of today(they'd flip out of a few Republicans too but not on the Paul wing).
GOP: stand your ground regarding traditional marriage. You are on the right side of history and eternity.
Quite the opposite. Human society has been moving away and dropping the false and disgusting Bronze age morals and beliefs for the past few centuries. Ending the notion that the Earth was the center of the universe? Check. Ending the myth that humanity is only 6,000 years old and created in their current form? Check. Ending slavery? Check. Ending the oppression of women? Check.
This is merely history marching. In fifty years the advocates of "traditional marriage" will be looked at with the same scorn as people look at George Wallace today.