The attention ramped up last week with Illinois Sen. Barack Obama's visit to Fayetteville and former President Bill Clinton's address in Cary to promote the bid of his wife, New York Sen. Hillary Clinton, to head the ticket. Bill Clinton said he expects Hillary to campaign in the state every week until the election.

North Carolina's May 6 balloting is one of main events left as candidates count down days and delegates to the August Democratic convention.

Taking developments day by day:

Today: Greensboro Mayor Yvonne Johnson officially endorsed Obama on Monday, saying he can bring people together to create change.

Wednesday: Obama appear at a 1 p.m. town hall meeting at the Greensboro Coliseum.

Thursday: Hillary Clinton will campaign in North Carolina, her campaign said, but details are not yet available. Some are calling the Old North State a must-win for her campaign.

"Clinton probably has to win North Carolina's May 6 primary to fight on with a real chance -- but/and Obama has to win it to avoid a prolonged fight," wrote Mark Halperin of Time's "The Page" blog.

Saturday: Long-time Bill Clinton confidant and adviser James Carville will be among one of two keynote speakers at the Young Democrats of North Carolina's statewide convention.

The convention will be held at 11 a.m. Saturday at the Sheraton Imperial Hotel in Research Triangle Park.

Newark Mayor Cory Booker, who has endorsed Obama, will also speak at the event, as will former North Carolina Sen. John Edwards, who has remained neutral in the race between Obama and Hillary Clinton.

All statewide Democratic candidates are also expected at the event, said coordinator Zack Hawkins.

Also part of the continuing scene: Meetup groups first for Obama and now for Clinton, along with a likely proliferation of television ads for both.