SPARTANBURG, S.C. (AP) - Republican candidates will challenge President Barack Obama on foreign policy, an issue they have given scant attention in recent weeks, in a CBS News debate airing Saturday night on WINK-TV.
    
Two GOP rivals are fighting to mend damaged campaigns. Texas Gov. Rick Perry blundered in a debate Wednesday, when he couldn't remember a Cabinet department he's proposed to abolish. Rival Herman Cain is battling a series of sexual harassment allegations.
    
Their troubles leave former Massachusetts Gov. Mitt Romney in a stronger position. Former House Speaker Newt Gingrich has also seen his fortunes improve, reflected in a CBS News poll released Friday that had him tied with Romney for No. 2 behind Cain.
    
Also onstage will be Minnesota Rep. Michele Bachmann, Texas Rep. Ron Paul, former Pennsylvania Sen. Rick Santorum and former Utah Gov. Jon Huntsman.

The debate begins at 8pm on WINK-TV.

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