Mark Warner or Michael Bennett. Maybe Sharrod Brown?
For the Democrats, I'd say Mark Warner, Kirsten Gillibrand or Martin O'Malley would be good choices.
I agree with all 5 of these names. They could certainly make some noise in this convention.
I'm thinking more John Thune since he defeated Tom Daschle in 2004, something I thought couldn't be done. Marco Rubio, is a good choice, but he just came into the Senate last month. I know Barack Obama did that, but to me, that was a rare case of euphoria. I guess it still could be done considering Rubio is a Latino, but still, I don't see his star rising too much until the 2016 RNC.