It's a defunct party. There's a crisis of leadership. It's mostly because nobody know what it means to be a Republican anymore.
It will probably be 12 years before we ever see a Republican president, and I would be surprised if 10 of those years aren't with House and Senate democrat majorities. And that's without mentioning the Supreme Court. The next century will be a leftist century. Just like the last one, I suppose.
Ehyeh asher ehyeh.