Idaho's first Republican presidential caucus is tomorrow as GOP stalwarts choose a challenger for Democratic President Barack Obama come November.

Historically, Idaho held a May GOP presidential primary.  But the state Republican Party this year opted to move up its selection process two full months by joining nine other states holding "Super Tuesday" nominating contests.     An earlier caucus - when the GOP nomination was still up for grabs - was designed to lure candidates to a state often ignored during election years, despite its strong Republican roots.

It worked: with campaign appearances in recent days by former Massachusetts Gov. Mitt Romney, Texas Congressman Ron Paul, former Pennsylvania Sen. Rick Santorum, and former Georgia U.S. Rep. Newt Gingrich. Paul is slated to be in Idaho again today and tomorrow.

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