Former Massachusetts Gov. Mitt Romney is expected to suspend his campaign today.

The only question is does he endorse McCain or Huckabee?

The following is from CNN:

Romney had won 270 delegates in through the Super Tuesday contests, compared with front-runner John McCain’s 680.

Suspending a campaign has a different meaning depending on the party.

On the Republican side, decisions on how to allocate delegates is left to the state parties.

On the Democratic side, a candidate who “suspends” is technically still a candidate so he or she keeps both district and statewide delegates won through primaries and caucuses.

Superdelegates are always free to support any candidate at any time, whether the candidate drops out, suspends or stays in.

National party rules say that a candidate who “drops out” keeps any district-level delegates he or she has won so far but loses any statewide delegates he or she has won.

Romney is expected to announce his decision Thursday afternoon at the annual Conservative Political Action Conference in Washington, three Republican sources told CNN.