Head to Head matchups in this NH poll:
Sample = 500 Likely Voters
Clinton: 40%
Giuliani: 50%
Clinton: 39%
McCain: 51%
Clinton: 47%
Romney: 42%
.....
Obama: 41%
Giuliani: 41%
Obama: 42%
McCain: 42%
Obama: 48%
Romney: 33%
.....
Edwards: 42%
Giuliani: 47%
Edwards: 43%
McCain: 43%
Edwards: 48%
Romney: 37%
.....
http://www.suffolk.edu/files/SUPRC/march02_2007_marginals.pdf
The polls are going in the opposite way for the Clintons right now in the general in NH due to the high unfavorability of Hillary Clinton. Views on Obama haven't been fully formed yet. Once Clinton and Obama get the same press treatment then, I think Clinton's numbers will go up. Kerry was behind in NH as well in the general at this point in 2004, he had to wait until the summer of 04 when he selected his VP John Edwards before he started going up in NH. So, I take these general election matchup numbers with a grain of salt.