Which Republican is winning the reality TV primary?

There is a calculus facing Republican presidential candidates as they edge into the sometimes bizarre and volatile world of reality television. The upside? Pop culture cache and exposure to new voters. The downside? Possibility of scandal. And more than in any other election cycle, GOP candidates seem willing to take their chances in 2015 Affiliating with any celebrity can be a smart PR gambit.

Take Sen Marco Rubio (R-FL), who was endorsed summer 2015 by Rick Harrison, star of History’s popular “Pawn Stars” and owner of the Gold & Silver Pawn Shop in Las Vegas (NV). Harrison has become a piece of the campaign’s apparatus: giving television hits, holding fundraisers and stumping for Sen Rubio on the campaign trail. He even opened Sen Rubio’s Iowa headquarters in August. “This guy honestly cares about [the] American people and free enterprise,” Harrison told Fox News.