Rob Portman, Marco Rubio and Jeb Bush favorability ratings

In this poll:

Among the prospect for Mitt Romney's Republican vice presidential pick Ohio Sen. Rob Portman and Florida Sen. Marco Rubio are widely unknown and not very popular at this point in the campaign. Former Florida Gov. Jeb Bush is better know and more well liked among the Republican base.

Poll Questions

Q: Do you have a favorable or unfavorable impression of Rob Portman?

No opinion

Q: Do you have a favorable or unfavorable impression of Marco Rubio?

No opinion

Q: Do you have a favorable or unfavorable impression of Jeb Bush?

No opinion