Raleigh, N.C. — Former President Bill Clinton is planning a stop in Raleigh on Sunday in an effort to help re-elect President Barack Obama.

Clinton initially was scheduled to be in the Triangle on Saturday, but campaign officials said Friday afternoon that a scheduling conflict forced them to move his appearance back a day.

Clinton will appear at the Pullen Park Event Plaza, where doors open at 4 p.m. It wasn't clear when Clinton would speak to supporters.

With the election next Tuesday, the former president is still working to win over North Carolina.

A WRAL News poll released Tuesday found that 50 percent of likely voters would cast their votes for Republican challenger Mitt Romney and 45 percent for Obama.

Both candidates were tied at about 45 percent in an Elon University poll released Monday.

Obama carried the Tar Heel state in 2008, the first Democrat to win the state since Jimmy Carter in 1976.

On Thursday, the Obama campaign also announced that first lady Michelle Obama will visit Charlotte on Monday. Details of the visit have not yet been released.

It's her first visit to Charlotte since the Democratic National Convention was held in North Carolina's largest city in early September.

Vice President Joe Biden's wife, Jill Biden, is also expected to visit campaign offices in Asheville and the Charlotte suburbs on Saturday. The trips were planned for last weekend, but the trip was postponed because of Hurricane Sandy.

President Obama's final campaign schedule was released Thursday morning, and it includes stops in eight battleground states, including Wisconsin, Virginia and Ohio. It does not include North Carolina.