NEW YORK (CNN) - The first round of exit polls from Republican and Democratic primaries across the country are providing some early signs on what trends are at play, and how the night may go.
On the Republican side, the conservative vote appears to be deeply split: 80 percent of Mitt Romney voters identify themselves as conservative, and roughly the same percentage of Mike Huckabee voters say the same. But only 49 percent of McCain voters said they were conservative – one sign the Arizona senator's efforts over the last week to placate conservative voters has not yet paid off.
On the Democratic side, early indications suggest it could be a long night. Primary outcomes often turn on those people who made their decisions within the last three days before the vote. According to the exit polls, Obama and Clinton are essentially splitting those voters, with 47 percent going for Obama and 46 percent for Clinton.
There's no doubt Democrats are torn between Barack Obama and Hillary Clinton. But the early exit polls show they are not bitterly divided: 72 percent of Democrats said they would be satisfied if Clinton won the party's nomination, while 71 percent say the same about Obama.
–CNN Senior Political Analyst Bill Schneider