cedarville university political science professor mark caleb smith say he's struck by the lack of excitement for any one of them. >> i don't see santorum or romney or paul or gingrich generating a lot of intense enthusiasm. there's a lot of interest and a lot of desire to know what's going on but i think people are looking toward november because of their dissatisfaction with the candidates right now. >> woodruff: ohio republican voters, smith says, are driven by a desire to defeat president obama in the fall. his description fits jamie macgregor, who wanted new jersey governor chris christie to run, cares most about tax reform and job growth, and made his current choice for practical reasons. >> mitt romney because of his electability. is attractive to me. we have to think bigger than just now. we need to think towards november. i think that there's serious risk with santorum and paul and gingrich up against obama. because i don't think that they have the cross appeal that we're going to need. >> woodruff: does that mean you've now settled on mitt romney? >> reluctantly, yes. >> woodruff: m