21.   Bush then launched some goofy negative ads claiming Gore was ducking debates.

22.   But Buchanan lashed out at Dole on several occasions, taking the Kansan to task for running negative ads and declining to participate in an Arizona debate Thursday night.

23.   But in several markets, the cable empire is already striking back with negative ad campaigns against DSS.

24.   But some analysts say the risk of not responding to negative ads is greater than the threat of a backlash from voters.

25.   But so far both men have resisted negative ads, running instead on their personalities and highly detailed programs.

26.   But the harshest attacks came from Forbes, a longshot candidate who is under criticism for his use of negative ads.

27.   But Weld also demanded that Kerry pull a series of negative ads that the Massachusetts Teachers Association is airing.

28.   By removing the Pearl Harbor aspect of most negative ads, Davis and Lungren shattered the pattern.

29.   Dole heads off largely free of the millions of dollars in negative ads that rival Steve Forbes leveled against him.

30.   Dole knows too well how it feels to be on the receiving end of a late-in-the-game blitz of negative ads.