Pelosi now one vote short thanks to unions

Rep. John Boccieri, Democrat of Ohio, just announced that he'll switch his vote from no to yes, and it's not hard to see why.

He is one of four Democrats to switch from no to yes in the past few days as Obama and Democratic leaders try to corral enough votes for the legislation. A vote is expected on Sunday.

Boccieri has been pressured on the issue. Labor unions and other groups backing health care reform ran ads in his district.

Boccieri voted against health care reform the first time around. A Blue Dog moderate and former pilot, he's been remarkably principled in his deliberations over ObamaCare, even turning down a ride on Air Force One with the president. But Boccieri represents a heavily blue collar congressional district near Cleveland. The union pressure proved to be too much.

With Boccieri in the yes column, Fox News counts 215 votes in favor of health care reform. Pelosi and Obama need just one more.