'Drives me insane': Insider worries GOP is 'turning out Democratic votes' with attack line

Donald Trump and the Republican Party are going down a "really dumb" path with their attacks on Vice President Kamala Harris, and they will almost certainly "backfire," a former key adviser to ex-House Speaker Paul Ryan (R-WI) said.

Brendan Buck appeared on MSNBC over the weekend, where he was asked about Trump and other top GOP personalities intentionally mispronouncing Harris' first name and settling in on potentially sexist lines of attack.

The host asked if Republicans are running out of time to make something stick.