[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/09/01/art.njrace.gi.jpg caption="Candidates and outside groups have spent nearly $37 million on ads in New Jersey."]
WASHINGTON (CNN)– Candidates and outside groups in New Jersey's highly contested gubernatorial race have spent nearly $37 million dollars on advertising since May.
Incumbent Democratic Gov. Jon Corzine's campaign tops the charts spending nearly $19 million dollars on 10,161 advertisements compared to the nearly $9 million spent by Republican challenger Chris Christie. Independent candidate Chris Daggett has spent $257,447 on advertisements in the state according to analysis by TNSMI-CMAG, CNN's consultant on political advertising.
Corzine, who is estimated to be spending nearly $2 million a week on advertising has been increasingly negative in his ads, a move seen by many as a means to close the gap in the polls.
Evan Tracey, of TNSMI-CMAG, said according to his analysis, Corzine is well on track to spend more than $20 million by Tuesday when voters head to the polls.
The Republican Governors Association is lending a helping hand to Christie, spending just over $5 million on 6,032 advertisements. The Mid Atlantic Leadership Fund, a Washington based firm which usually backs Democratic candidates, has spent nearly $2 million on behalf of Corzine's campaign for re-election.
Late October polls show Corzine and Christie polling neck-and-neck, while Independent candidate Chris Daggett continues to make gains, primarily peeling support away from the Republican challenger.