Two polls unveiled on Wednesday find President Barack Obama ahead of the two leading Republican hopefuls -- former Gov. Mitt Romney of Massachusetts and former U.S. Sen. Rick Santorum of Pennsylvania -- in the swing state of Ohio.

With 18 Electoral College votes on the line in the Buckeye State in November, Ohio is a crucial state for any Republican presidential nominee -- in fact, no GOP presidential candidate has ever won the White House without carrying Ohio.

There are signs this week that Republican presidential hopeful Mitt Romney is taking the fight to GOP rival Rick Santorum in his own backyard -- delegate-rich Pennsylvania. The Keystone State, which will bring 72 delegates to the Republican convention in Tampa come August, holds its primary on April 24 along with four other states in the region -- Connecticut, Delaware, New York and Rhode Island.

Theres a fight for the right as the two leading candidates for the Republican presidential nomination -- Mitt Romney and Rick Santorum -- continue to try to woo over conservatives and bash each others conservative credentials.

The candidates in the race for the Republican presidential nomination are focusing on Wisconsin this week as Rick Santorum, Ron Paul and Newt Gingrich look to slow Mitt Romney down in the Badger State.

While Maryland and the District of Columbia also hold primaries April 3, Wisconsin is the largest prize of the three with 42 delegates to the Republican convention in Tampa. A Rasmussen Reports poll released at the end of last week found Romney leading there with 46 percent, followed by Santorum with 33 percent, Paul with 8 percent and Gingrich with 7 percent.

Despite losing Louisiana's Republican presidential primary to Rick Santorum on Saturday, Mitt Romney looked to rally conservatives behind his candidacy on Monday as he unveiled the support of three leading conservatives.

Veteran Florida Republican leader Al Cardenas, formerly with the Republican Party of Florida and now the chairman of the American Conservative Union, announced he is backing Romney for the Republican presidential nomination.

After the Louisiana primary on Saturday, the procession of states that are determining which Republican will challenge President Barack Obama in November slows down with the next round coming up on April 3 when the District of Columbia, Maryland and Wisconsin have their say.

Wisconsin is the largest prize of the three with 42 delegates to the Republican convention in Tampa -- and a poll released at the end of last week shows Mitt Romney in solid shape to win the state.

Two polls unveiled on Friday show Rick Santorum has a commanding lead over Mitt Romney in the Louisiana Republican presidential primary, which will be held on Saturday. When Republicans meet at their national convention in Tampa come August, Louisiana will have 46 delegates.

With Friday marking the two-year anniversary of President Barack Obama signing the federal health-care bill into law, Republican presidential hopeful Mitt Romney called for repealing the law -- even as his rivals for the GOP nomination took aim at the state health-care law he signed in Massachusetts and a challenge to it heads to the Supreme Court.

In the 167 years that Florida has been a state, no major party has nominated someone from it to be on a presidential ticket, but that could change as Republicans get ready to challenge Barack Obama in November.

Some Floridians have come close. Former Sens. Connie Mack and Bob Graham came close to being named to the vice presidential tickets in recent years. Napoleon Bonaparte Broward was considered to be William Jennings Bryans running mate in 1908 while Thomas Brown, the only Whig to ever be governor of Florida, garnered 3 votes for vice president at his partys 1852 convention.

Louisiana, which will have 46 delegates at the Republican convention in Tampa come August, holds its presidential primary on Saturday and Rick Santorum appears to have an impressive lead in the Pelican State.

A Rasmussen Reports poll of likely Louisiana Republican primary voters unveiled Thursday finds Santorum ahead of the pack with 43 percent, while Mitt Romney places second with 31 percent. Newt Gingrich places third with 16 percent and Ron Paul trails with 5 percent. Five percent are undecided and 1 percent back other candidates.