Someone who is normally a U.S. Republican Party Supporter, but supported Barack Obama in the 2008 presidential election.

The opposite of a McDemocrat, someone who is normally a U.S. Republican Party supporter, but supported John McCain in the 2008 presidential election.
Guy 1: I really hope Barack Obama wins the election.
Guy 2: I didn't know you were a Democrat.
Guy 1: I'm not, I'm a BroPublican.
by MickMicky July 10, 2010
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