Gingrich tied with Romney in national poll, Cain leads

With less than two months before the first caucus in Iowa, a national CBS News poll shows the Republican presidential field is now a three-way race between businessman Herman Cain, former Massachusetts Gov. Mitt Romney and former House Speaker Newt Gingrich.

Cain, whose campaign has been contending with a series of allegations that he had sexually harassed female employees during his tenure with the National Restaurant Association more than ten years ago, still leads the field with 18 percent. Gingrich, meanwhile, has surged into double digits after months of stagnation in the bottom tier. He is now tied with Romney at 15 percent.

Although Cain still leads the pack, the allegations have hurt him among women, according to the poll; his support among female Republican voters has dropped 13 percentage points since October. Sixty percent of likely Republican primary voters say the allegations have not changed their opinion of Cain, and the number jumps to 71 percent among voters aligned with the tea party movement.

The primary field, however, still has room to fluctuate. Of the 382 likely Republican primary voters surveyed, seven out of ten said it was still too early to decide which candidate to support.

You can watch Gingrich visit the CBS Early Show this morning below.

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