mid-week last week, romney's side had run 13,500 and and gingrich campaign just 200 but romney says he is defending himself from attacks from gingrich. >> we came to florida and speaker gingrich didn't win the debate, i did. we responded. the attacks that were coming to us. if you are attacked, i'm not going to sit back and i'm going to fight back hard. >> reporter: he fought back hard with more than $17 million in advertising, out spending the gingrich side by more than five to one. >> shep: sometimes negative campaigning turns off the electorate. any sign that the voters were turned off by all this? >> reporter: certainly a lot of complaints, even voters going to the polls. when you talk to them, there is a sense of dissatisfaction both of what they are seeing on the television and with the candidates themselves.