I think what matters is that the candidate believes in the principles of liberty. I don't care if they're a republican, democrat, libertarian, green party member, constitution, independent, or from the I hate fish party.
Those who are running for office should decide what banner they want to run under, and those of us in their districts should look in all parties for the candidate who will most promote freedom, and vote for them. We don't need to waste time arguing about parties, just promote liberty wherever it is found.