A year from now, who will already be tipping a 2016 run?

[EmersonAdams]

I doubt Hillary or Biden will run, but if either of them jumps into the race they could probably clear the field (Hillary more so than Biden). They will probably wait to see how the 2016 field takes shape, and if it looks weak either could become a savoir candidate. They can afford to wait until later in the campaign season to jump in, for no other reason than their near universal name rec.

However, a number of candidates will need to enter the field early if they are to ward off Hillary or Biden. O'Malley, Kaine, Cuomo or Warner will need to get out early, and try to claim "front-runner" status. Others, like Hickenlooper, Gillibrand, or Patrick will need to enter fairly early to build up campaign infrastructure and national name recognition. Schweitzer, Feingold, and Warren could conceivably wait until later in the season to jump in, and try to pick off a faltering front runner and claim momentum.