NH-CNN/WMUR Poll: Trump leading, Rubio in 2nd

[Landslide Lyndon]

With Democratic primary likely-to-safe to Sanders, then Independents will have a strong say in Republican primary. And this can help Trump.
Establishment trio (Kasich, Jeb and Christie) should go all-out on Rubio saying that he's unexperienced to be the nominee.

This. A big reason why Obama lost in 2008 is because independents thought he had it in the bag and preferred to vote in the Republican primary for their other darling, John McCain.