Internals for Hillary in new ABC News Poll are very good, she has the strongest supporters

45% of Obama voters may chance their minds before caucus day. Turnout is key. Hillary has more voters out there. She just has to get them turned out.

http://abcnews.go.com/PollingUnit/Story?id=4021096&page=3

DEFINITE/CERTAIN – Moreover, Clinton's support has solidified: Seventy percent of her supporters say they've definitely made up their minds about whom to support, up 13 points from last month. Edwards' "definite" support similarly is up by 10 points, to 63 percent. Obama's, however, is unchanged at 55 percent definite.

Looking at these numbers another way, among "definite" voters Clinton has 34 percent support, up 7 points from last month; Obama has 31 percent, Edwards 22. Among the rest -- changeable voters -- Obama has 39 percent support, likewise up 7 points from last month; Clinton 24 percent, Edwards 20.

Fifty-nine percent of Clinton's supporters also say they're "very enthusiastic" about their choice; it's about the same, 56 percent, for Edwards, but 49 percent for Obama.

Still, if Clinton does better on enthusiasm and commitment, Obama pushes back with intention to vote: He leads Clinton by 35-26 percent among people who say they're "absolutely certain" to attend their caucus; it's about the opposite, 28-35 percent, among those who say they'll probably go. (Edwards gets 20 percent support in both groups.) That result underscores how key turnout will be.