This is an internet-based national poll, but supposedly
one of the better ones according to Nate Silver, so it's surprising that its numbers on the GOP side here look to be so at odds with other polling we've seen. Perhaps partially a consequence of who was included in the polling question? I mean, Rand Paul is most likely surging right now, but he doesn't seem to have been included in the poll.
http://wtaq.com/news/articles/2013/mar/15/christie-is-most-competitive-republican-vs-democrats-in-2016-reutersipsos-poll/Dems:
Clinton 51%
Biden 12%
Cuomo 4%
Booker 4%
Warner 2%
O'Malley 1%
Patrick 1%
GOP:
Ryan 22%
Christie 16%
Rice 14%
Rubio 9%
J. Bush 6%
Jindal 3%