Rep. Eric Massa (D-NY) will resign Monday at 5pm, a source close to the embattled incumbent tells Hotline OnCall.
Massa has been pressured by House Dems to step aside amid an ethics controversy that caused him to announce earlier this week he would not run for a second term.
[U]pon the occurrence of a vacancy in any elective office which cannot be filled by appointment for a period extending to or beyond the next general election at which a person may be elected thereto, the governor may in his discretion make proclamation of a special election to fill such office, specifying the district or county in which the election is to be held, and the day thereof, which shall be not less than thirty nor more than forty days from the date of the proclamation.
In short: it'll be David Paterson's call. (Or Richard Ravitch's -- who knows who will be the Governor of New York on Monday.)
UPDATE: Reid Wilson has some more details on possible Democratic candidates for the seat:
On the Dem side, Massa's pick appears to be Hornell Mayor Shawn Hogan (D), but he has yet to decide on a bid. Assemb. David Koon (D), though, told county chairs he'll run. And several other legislators are also taking a look at the contest.