Conservative political activists believe Republican presidential nominee Mitt Romney should pick Sen. Marco RubioMarco RubioWill Republicans stand up to the NRA's insurrection rhetoric? The Hill's Whip List: Senate ObamaCare repeal bill Ivanka Trump turns to House GOP on paid family leave MORE (R-Fla.) as his running mate, based on a straw poll conducted Friday night after the Conservative Political Action Conference in Chicago.

Rubio, the choice of 30 percent of the activists in attendance, received more than double the votes of any other candidate. 

New Jersey Gov. Chris Christie earned the nod of 14 percent of attendees of the one day event, hosted by the American Conservative Union, while Rep. Paul RyanPaul RyanRyan reminds lawmakers to be on time for votes Lawmakers consider new security funding in wake of shooting Paul Ryan: ‘Beautiful day’ to catch up with Bono MORE (R-Wisc.) garnered nine percent and Sen. Rand PaulRand PaulTrump: ‘I cannot imagine’ GOP senators don’t back healthcare bill Sunday shows preview: Senate healthcare debate heats up Trump called Cruz to press him on ObamaCare repeal bill: report MORE (R-Ky.) was the choice of 8 percent of the assembled crowd. Some 13 potential candidates received votes, but notably none of Romney's former rivals for the Republican presidential nomination cracked the top five.

Republicans believe that Rubio's ties to Florida — a key swing state in November — and his Latino heritage could boost Romney's chances at taking the White House. Republicans have struggled to appeal to Latino voters, the fastest growing demographic in the American electorate. 

The pair have attended campaign events together, and Romney has incorporated an anecdote about Rubio's Cuban parents into his standard stump speech. Mentioning the Florida lawmaker elicited warm cheers from an Iowa crowd Romney spoke with on the campaign trail Friday.

Rubio has repeatedly denied interest in the position, however.

"I don't want to be the vice president right now, or maybe ever," Rubio said in April. "I really want to do a good job in the Senate."