A surging Mitt Romney might have some benefits for his fellow Republicans in other races.
Scott Brown, for instance, might be seeing his edge against Elizabeth Warren being renewed. Prior to the first debate, a WBUR/MassINC poll had Obama up 28 points over Romney (60-32) and Warren up 4 points over Brown (49-45) in the Bay State.
In a WBUR/MassINC poll taken after the debate, Romney significantly ate into Obama's lead in Massachusetts, knocking it down to 16 points (52-36). And Brown took a 3-point lead over Warren (48-45).
Significantly, both polls use the same partisan splits (36D/12R/52I). Also interestingly, Brown's and Warren's favorability/unfavorability ratings remain about the same across both polls. Brown's favorability rating does inch up a couple points, but I don't think that increase is enough to explain a 7-point improvement in his standings against Warren.
What we might be seeing in Massachusetts is an increasing sentiment among voters that Republican policies might work for them as well as for the country as a whole. Because of this belief, they are more willing to support Republicans on the Congressional level.
Time will tell if other voters in other states feel this way.