“Mark it down, this is going to be a turning point in the history of the Republican Party as well. And let those out there chattering, let them chatter away all they want to and scream like hyenas. … This party that killed this background check yesterday — this party is moving toward extinction. A new Republican Party is going to replace it. And this is going to be a vote that people will look back on and say, ‘That party, that extremism, that was unsustainable.’”