toxic like louisiana, where mary landrieu's opponent, bill cassidy is doing all he can to run against the president. >> one obama in washington is enough but louisiana has two because mary landrieu supports barack obama 97% of the time. she voted for obamacare and still supports it. >> reporter: the president's given mixed signals how much influence he has in congressional races. he says democrats, even some who tried to distance themselves from him still support his policies. his spokesman says mr. obama will be at least partly responsible, no matter which way the senate goes. >> what i feel confident in predict in advance is that the president will be at least get some credit if democrats hold on to majority in the senate and he will get more than his fair share of the blame if they don't. >> reporter: one thing the president has been doing for democrats is raising money. he raised a ton of it. meanwhile democrats have bill and hillary clinton to campaign in states where mr. obama...