Well, the question of whether Hillary’s stumble actually hurt her finally has numbers. Rasmussen seems to be saying it did (though it’s of course impossible to know for sure):

Senator Hillary Clinton’s lead in the first-in-the-nation New Hampshire Primary has fallen to its lowest level of the season.
The latest Rasmussen Reports telephone poll of the state’s Likely Primary Voters shows Clinton leading Senator Barack Obama by ten percentage points, 34% to 24%. Former Senator John Edwards attracts 15% of the vote while New Mexico Governor Bill Richardson earns 8%. No other candidate tops the 3% level of support. (see crosstabs)
At 34%, Clinton’s current level of support is the lowest measured in any Rasmussen Reports poll this year. Four previous polls in New Hampshire found her consistently in the 37% to 40% range.