USA TODAYIowa Campaign Ads Show Power of Negativity in Republican RaceBusinessWeekBy Jonathan D. Salant Jan. 3 (Bloomberg) -- As Iowa Republicans take in the final appeals before tonight's caucus voting, one major lesson the candidates will take away: Going negative works. An estimated $5.8 million was spent on television ...Gingrich concedes Iowa, but not raceWashington PostGingrich strives for 'great upset' in IowaCNN (blog)Newt sends mixed signals on IowaPoliticoSan Francisco Chronicle -USA TODAYall 942 news articles »