They pulled themselves up by their knuckles...no, wait. Can't say that. Evolution, and all that.

Which is the Republican?

TPM:

Rep. Sean Duffy (R-WI) thinks some of his fellow Republicans sound downright primitive when they talk to voters. 

"You have people on our side of the aisle that have a really abrasive tone," Duffy said Tuesday on MSNBC's "Morning Joe." "We can come across as knuckle-dragging Neanderthals on occasion." 

A study released this year by Dutch scientists suggested that Neanderthals may have actually been more articulate than previously thought, but that's beside the point.