On October 2, 2008, Biden participated in the vice-presidential debate with Palin at Washington University in St. Louis. Post-debate polls found that while Palin exceeded many voters' expectations, Biden had won the debate overall. During the campaign's final days, he focused on less populated, older, less well-off areas of battleground states, especially Florida, Ohio, and Pennsylvania, where polling indicated he was popular and where Obama had not campaigned or performed well in the Democratic primaries. He also campaigned in some normally Republican states, as well as in areas with large Catholic populations.