The White House says it's up to Harry Reid whether the Senate votes on the public option.

Twenty senators have signed a letter asking for a vote on the public option through reconciliation, which would allow Democrats to pass legislation with just 51 votes.

White House press secretary Robert Gates said today that the White House will leave that up to the Senate Majority Leader.

"I think they've asked for a vote on the floor of the Senate, and that's certainly up to those who manage those amendments and up to Leader Reid," Gibbs said.

President Obama did not include a public option in the new healthcare plan he unveiled this morning, which builds on the Senate bill.

Gibbs suggested it was left out because it lacks support, saying the president is looking for "the best way forward into something that can ultimate wind its way through Congress."