Sinking in the polls at the national level and in Iowa, where she has pinned much of her presidential hopes, U.S. Rep. Michele Bachmann of Minnesota went on the attack on Tuesday. Bachmann released a new Web video which attacks the conservative credentials of the leading candidates for the Republican presidential nomination: Herman Cain, Newt Gingrich, Ron Paul, Rick Perry and Mitt Romney. Bachmann also unveiled a new website on Tuesday which highlights her record and contrasts it with her primary rivals.

Former U.S. Sen. George LeMieux, now in a crowded Republican primary field looking to take on Democrat incumbent U.S. Sen. Bill Nelson, weighed in on the U.S. Supreme Court's decision to hear a constitutional challenge to the federal health-care law signed by President Barack Obama.

The team behind U.S. Rep. Connie Mack, who is expected to enter the crowded Republican primary field to take on Democratic incumbent U.S. Sen. Bill Nelson in 2012, is forwarding an endorsement from a major conservative figure -- pundit Sean Hannity. The Mack camp is forwarding the following video clip of Hannity praising Mack on Friday.

A poll released on Monday found that Iowa is up for grabs, with former U.S. House Speaker Newt Gingrich catching businessman Herman Cain and five of the hopefuls for the Republican presidential nomination pulling in double digits.

Businessman and Republican presidential hopeful Herman Cain took off the gloves in an interview with GQ released on Monday.

Asked about what ice cream flavor reminded him of U.S. Rep. Michele Bachmann, R-MN, Cain said, Tutti-frutti. I know I'm going to get in trouble!

The campaign behind Republican presidential hopeful former Gov. Mitt Romney of Massachusetts unveiled its team to reach out to social and religious conservatives in the Sunshine State on Monday. While Romney has take socially liberal positions in the past -- namely during his two statewide bids for elected office in Massachusetts back in 1994 and 2002 -- his supporters insistthat Romney now stands with social conservatives against abortion and on the role of religion in the public square.

On Monday, the team behind former Gov. Jon Huntsman of Utah attacked Republican presidential primary rival former Gov. Mitt Romney of Massachusetts for ideas he expressed at a debate on Saturday, which -- the Huntsman camp insisted -- would lead to a trade war with China. Huntsman served as ambassador to that nation under President Barack Obama.

On Friday, the team behind former U.S. Sen. George LeMieux fired away at U.S. Rep. Connie Mack, one of LeMieux's chief rivals for the Republican nomination to take on Democrat incumbent U.S. Sen. Bill Nelson in 2012. A Quinnipac University poll released earlier in the day showed Mack out front in the GOP primary field with 32 percent and LeMieux in second with 9 percent.

Former U.S. House Speaker Newt Gingrich has been building momentum in recent weeks and a CBS News poll released on Friday shows he has broken into the top tier of candidates for the Republican presidential nomination.

The national poll found businessman Herman Cain remains in front with 18 percent, with Gingrich and former Gov. Mitt Romney of Massachusetts right behind him with 15 percent each.

The poll of 382 likely Republican primary voters -- part of a sample of 1,029 registered voters -- was taken Nov. 6-10 and had a margin of error of +/- 5 percent.

Quinnipiac University released a poll Friday that showed Republican U.S. Rep. Connie Mack is running right behind Democrat incumbent U.S. Sen. Bill Nelson in a possible 2012 match-up. Nelson takes 42 percent in the poll while Mack, who is expected in coming weeks to formally enter the race for the seat his father held for t12 years, garners 40 percent.