There’s been quite a bit of chatter about the new Concord Monitor poll showing Barack Obama in a statistical dead heat with Hillary Clinton in New Hampshire. (“The mighty Hillary juggernaut closes its vise-like grip on the post of Senate Majority Leader,” giggles Mickey Kaus). I’d be cautious about reading too much into the sudden Obama surge, though. It’s still very early, and while Obama is a terrific speaker, he has yet to be tested in a competitive race (his Senate victory was a cakewalk, remember). His recent visit to New Hampshire got good reviews, and he’s the flavor of the month. But whether he can sustain his current strength as the campaign gets rolling remains to be seen.