Despite rumors that Edwards would drop out of the race, or suspend his campaign, he announced he would continue.

NPR: Edwards Will Stay in Race Despite Wife's Cancer

But his call last month to suspend his campaign to focus on the financial crisis wasn't a good move, she said.

CNN: Candidates go negative but risk alienating voters

Former Massachusetts Governor Mitt Romney, who had a disappointing day on Super Tuesday, announced he would suspend his campaign for the Republican presidential nomination.

NPR: Conservatives a Test for McCain After Romney's Exit

He was asked a number of times whether he would do what McCain is doing, suspend his campaign and pull his ads off the air.

NPR: McCain Suspends Campaign; Obama Responds

In a statement on his Facebook page, Mr Barron said he had asked Labour to withdraw its endorsement of his candidacy and suspend his campaign.

BBC: England

Clinton plans to suspend her campaign within days, her campaign said.

CNN: Obama, Clinton meet for 'unity' talks

But in a statement on his Facebook page, he said he had asked Labour to withdraw its endorsement of his candidacy and to suspend his campaign.

BBC: Lee Baron, Labour

Santorum advisers including Gidley said the final decision to suspend the campaign, which allows him to continue raising money and probably keep control of delegates won so far, came Monday night and was based on three factors.

CNN: Santorum suspends campaign, clearing Romney's path

"We made a decision over the weekend that while this presidential race for us is over for me and we will suspend our campaign effective today, we are not done fighting, " Santorum said during his speech in Gettysburg on Tuesday.

CNN: Santorum's decision came down to odds and his daughter

McCain senior adviser Mark Salter said that the campaign will suspend airing all ads and all campaign events pending Obama's agreement.

CNN: McCain, Obama headed to Washington for bailout talks

The decision by the UN to suspend the immunisation campaign is understandable but deeply regrettable.

BBC: Polio killings a major setback

When Senator McCain announced yesterday that he would suspend his presidential campaign starting today, we wondered what does that suspension entail, and is it even possible for a major party nominee to stop running for president?

NPR: How 'Suspended' Is McCain's Campaign?

After all the doom and gloom, pundits were then somehow surprised when McCain decided to temporarily suspend his presidential campaign and return to his day job in Congress, where he tried to work out a bailout deal with his colleagues.

CNN: Commentary: McCain has his priorities straight

And in the end, if Obama is not willing to agree to suspend the debate - and I think the McCain campaign knows that he would never do that - will McCain show up in Mississippi or not?

NPR: McCain Suspends Campaign; Obama Responds