Independent New Jersey gubernatorial candidate Chris Daggett, targeted by Republicans as potentially being worse than Gov. Jon Corzine (D), is airing a new radio ad that calls the incumbent a "miserable failure."

"To change our state we have to change our governor," Daggett says in the one-minute ad. "Four years of Jon Corzine have been a miserable failure. Four more would be a disaster."

The ad focuses on tone of the race in recent weeks, saying "my opponents have denigrated our politics with personal attacks." He's no kinder to Republican Chris Christie than he is to Corzine, saying he "has absolutely no plan on to govern New Jersey or how to fix our problems. His campaign continues to go in one direction: backwards."

The campaign is also filming a new television ad this week, following up on a quirky debut that saw limited airtime last month. Spokesperson Tom Johnson said that the campaign is also counting on continuing free media that Daggett has benefited from since his first debate performance. Daggett is actually canceling appearances before voters to accept more media requests to keep that free media going, Johnson said.

All three candidates are set to participate in one more debate, on WBGO radio this Thursday.