This is the third special Congressional election lost by Republicans this year. All of the losses have been in traditionally Republican districts, and each of the elections have seen healthy spending by both parties. This Fall, it's likely that Massa will see some of the same heavy spending from the DCCC. Unless the NRCC does a dramatically better job, Kuhl probably won't get the same level of support from the national party. Tom Cole, head of the NRCC, hinted that Republican members are on their own in his statement on last night's loss:

I encourage all Republican candidates, whether incumbents or challengers, to take stock of their campaigns and position themselves for challenging campaigns this fall by building the financial resources and grassroots networks that offer them the opportunity and ability to communicate, energize and turn out voters this election.