Rubio is an up and comer, though there are some inconsistencies in his background. Don't see much else on the R side. Christie's appearance is a major knockout. Nikki Haley is under fire here in SC and may not get re-elected. Paul Ryan - the last memeber of the House to get elected was 130+ years ago and he was a Civil War general. Plus Ryan's too far right.
The whole Tea Party concept and extremism is a negative.
On the D side? Hillary, although she'll be 69 and her appearance is a serious negative plus she's abrasive. Cuomo is also super abrasive.