Vice President Joe Biden (Courtesy: Getty Images)
Vice President Biden says it's too early to decide whether he will run for president in 2016 -- there's too much left to do under President Obama.
"There are a whole lot of reasons why I wouldn't run," Biden told CNN. " I haven't made that decision and I don't have to make that decision for a while."
The veep added: "In the meantime, there's one thing I know I have to do no matter what I do. I have to help this president move this country to the next stage."
Speculation about Biden's political future highlighted inaugural weekend.
Biden himself fueled much of the talk, thanks to his appearance at an inaugural party for Iowans -- who will open the 2016 contest with caucuses -- to his animated hand-shaking during Monday's parade on Pennsylvania Avenue.
One factor in Biden's decision: Will soon-to-depart Secretary of State Hillary Rodham Clinton also seek the presidency in three years?
"Look, I haven't made that judgment and Hillary hasn't made that judgment," Biden said on CNN. "But I can tell you what, everything that should be done over the next two years that I should be part of would have to be done whether I run or I don't run."
Again, he noted: " If this administration is successful, whoever is running as a Democrat is better position to win. If we are not successful, whoever runs as a nominee is going to be less likely to win."