Amid 2016 speculation, Hillary Clinton and Biden meet

On the heels of her lunch with President Obama Monday, former Secretary of State Hillary Clinton sat down for breakfast with Vice President Joe Biden Tuesday, a meeting that fueled speculation about whether either will be running for president in 2016.

Clinton met Biden at the vice president's residence at the Naval Observatory in Washington, D.C., for scrambled eggs, multi-grain toast, turkey bacon and fruit. While her meal with the president at the White House Monday was described by spokesman Josh Earnest as "a chance to catch up," her dining with Biden is one of those events that has the D.C. chattering class wondering what was truly the topic of conversation as both are considered top Democratic presidential candidates in 2016 and neither have ruled out the possibility of running.

• Hillary Clinton, Obama lunch at the White House
• Biden leaves open possibility for 2016 presidential bid

Clinton has avoided talking about her future since she stepped down as secretary of state earlier this year. Biden, on the other hand, in an interview with GQ earlier this month, left the door open to a run saying, "The judgment I'll make is, first of all, am I still as full of as much energy as I have now--do I feel this? ... Number two, do I think I'm the best person in the position to move the ball? And, you know, we'll see where the hell I am."

A recent poll showed Clinton would be the stronger of the two in hypothetical matchups against various Republican candidates.

And also boosting a possible Clinton candidacy: a political action committee raising money to urge her to run. CBS News confirmed that the Ready for Hillary super PAC has raised more than a million dollars in their effort.