Is the GOP still a MAGA party? Or just Trump's party?

There's a lot of hand-wringing going on right now within Republican ranks after the GOP's worse than expected midterm results.

The big question is: Is the Republican party still the party of Trump? NPR White House correspondent Tamara Keith tells Ian Bremmer that there may be no going back to what the party used to be.

"There's just a lot of people in the Republican party who don't see themselves going back to the nice, polite Mitch McConnell, Bob Dole Republican Party," Keith says in this week's episode of GZERO World.

Why? A lot of it has to do with how voters have become as polarized as the candidates they're electing.

Watch the GZERO World episode: US democracy after US midterms: polarized voters & Trump's GOP