And this establishes what? Undecided voters are not necessarily the independents who decide presidential elections. I don't even have to look at voter demographics to know 18-29 year olds don't decide presidential elections.
Undecided voters are defined as the swing voters that decide elections:
http://en.wikipedia.org/wiki/Swing_voteThey chose reagan, clinton, bush, obama, and they'll probably choose Cruz or Hilary or Perry in 2016.
Whoever gets them - and motivates them - wins. Colleges didn't have obama fever in 2012, but tea party didn't have romney fever, so that was kinda wash in 2012. Obama won because of entitlements... and that's gonna be a built in 3 point advantage for dems going fwd, unfortunately.
Unless the swing voters get Cruz Fever in 2016, he can't win it. I don't see Hilary enthusiasm being all that high, but it'll be there a bit.