Obama makes Arizona ad buy as race tightens

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Could AZ go to Obama?

PHOENIX -- Democratic presidential hopeful Barack Obama will begin airing television ads in Arizona in an effort to wrest away Republican rival John McCain's home state.

Obama campaign manager David Plouffe says the campaign is now targeting the state McCain has represented in Congress for 26 years.

A recent poll in Arizona showed the two candidates in a statistical dead heat.

McCain campaign manager Rick Davis says Obama would do better spending his money elsewhere.

The two candidates are sprinting to a finish in the final days of the campaign. McCain is spending part of Friday in battleground Ohio, while Obama is in the Midwest.

McCain plans to finish the campaign with a midnight rally on Monday in Prescott. He'll have his election night party in Phoenix.

(Copyright 2008 by The Associated Press. All Rights Reserved.)