The name Rob Portman may sound kind of familiar to you.

He's the junior senator representing the state of Ohio -- and was once in the running as Mitt Romney's Veep pick (long before Mitt tapped Paul Ryan).

But Rob's real calling in life is acting – specifically playing the role of POTUS Barack Obama.

You see, presidential candidates prepare for the nationally televised debates by practicing with mock debates, often using other prominent politicos acting as their counterparts. The Obama campaign got Sen. John Kerry to play Mitt for its debate prep and, recently, Republican insiders have revealed that Rob will impersonate Barack in an effort to help Mitt.

But, don't get too excited -- this isn't the first time Rob has portrayed POTUS. He was John McCain's faux-Barack back in the 2008 election as well.

So, we're left wondering why Rob keeps getting these gigs? Is it because he's such a good thespian? Or, is because he does such a believable impression of President Obama?

We may never know.