Possible list of 2016 Presidential candidates so far:
D:
Hillary Clinton
Joe Biden
Andrew Cuomo
Beau Biden
Martin O'Malley
Deval Patrick
Kirsten Gillibrand
Corey Booker
Elizabeth Warren
Antonio Villaraigosa
SOURCE
GOP:
Paul Ryan
Chris Christie
Ted Cruz
Marco Rubio
Rand Paul
Jeb Bush
Scott Walker
SOURCE: