U.S. Senator, New Hampshire
The freshman senator says she'd be flattered if considered, but is committed to representing New Hampshire. As a running mate, she could attract the vote of women and help gain delegates in New Hampshire, a key swing state.
(Jan. 6, 2011)
Governor, New Jersey
A Quinnipiac poll found the governor to be the favorite VP candidate among likely voters. Christie has said he'd certainly listen if approached by Mitt Romney, but loves his role as NJ's governor.
(March 29, 2012)
Governor, South Carolina
The Indian-American governor is a rising star in the Republican party -- but says she has no plans to become Mitt Romney's running mate. As the GOP candidates trail President Obama in women's votes, a change of heart by Haley could boost the ticket.
(Feb. 27, 2012)
Governor Jindal -- who endorsed Rick Perry last fall but recently backed Mitt Romney -- says he already has the job he wants. Yet, he hasn't said he would decline the vice presidency if offered. Jindal could provide a bump with southern voters.
(April 13, 2012)
Governor, New Mexico
The nation's first female Hispanic governor has one of the highest approval ratings in the country. If on the ticket, she'd help carry New Mexico, a state that often swings for Democrats. But Gov. Martinez insists she will not accept the vice presidency if offered.
(Jan. 17, 2012)
Unlike some of the others, McDonnell has not been shy about expressing interest in the position. As the leader of a major swing state since 2009, Romney may admire his track record on jobs and the economy.
(March 10, 2012)
U.S. Senator, Ohio
Portman helped Romney pick up a key primary victory in Ohio in March. His budget expertise makes him a strong candidate for the job.
(Feb. 20, 2012)
U.S. Senator, Florida
He is arguably the frontrunner, but the rising star of the GOP party has deflected attention to other candidates. He lacks experience, but could provide a boost for Romney among Hispanic voters and in another, vital swing state.
(April 25, 2012)
Having already declined a presidential run, Ryan has been the GOP's figurehead on budget issues as the chairman of the House Budget Committee.
(Feb. 16, 2012)
U.S. Senator, South Dakota
Thune is a true conservative, the No. 3 Republican in the Senate and was once considered for John McCain's running mate in 2008. He passed on a presidential bid and has backed Romney since the beginning, but has said he does not expect to be chosen as his No. 2.
(Feb. 29, 2012)