Since everything in politics is short-term, lets take a look at the current playing field.
Since NJ Governor Chris Christie is fighting for his political future, the Republicans still have US Senator Marco Rubio of Florida, who has lately been overshadowed by other GOP figures waging the battles over Obamacare and the federal budget. These include Senators Rand Paul of Kentucky and Ted Cruz of Texas, but the Florida conservative has political skills and resources that will sustain him as a 2016 contender when other flavors-of-the-month fade.
Rubio and Florida's other potential presidential contender, former Governor Jeb Bush, are victims of the increasingly bitter split in the Republican Party between the moderates and the right wing, partly over immigration and other hot button issues.
The Democrats have Vice President Joe Biden, Former Secretary of State Hillary Clinton, Massachusetts Senator Elizabeth Warren, New York Governor Andrew Cuomo and Maryland Governor Martin O’Malley.
A recent poll indicated that out of nearly 400 Democrats who were asked chose Hillary Clinton as their next candidate, with 63 percent in favor of the former secretary of state. Biden ranked second, with 12 percent of the vote, while Warren came in third, with 7 percent. 12 percent of responders did not choose any of the other above candidates.
So there you have it, this is a current snap shot of US political landscape.