The drum beat of speculation is getting louder, with more attention being focussed on Marco Rubio as a potential GOP running mate.

This weekend, former candidate Newt Gingrich was asked, who GOP front runner Mitt Romney should select as a V-P candidate? And Senator Marco Rubio was among the top 3 he name dropped.

Rubio, himself, was on Fox News Sunday, sharing what he could bring to the table.

"I certainly am not the most experienced person in Washington, D.C.," Rubio said. "But by the same token, I certainly have experience in serving in government, particularly in the legislative branch in one of the largest states, and more complex states in the country, in terms of public policy. And the good news is, as every day goes by, I gain more experience in these things."

He wouldn't discuss becoming a running mate, but a recent Quinnipiac Poll shows he's the top V-P choice among Florida conservatives.