A Maine Democratic source confirms that the supporters of Rep. Chellie Pingree (D-ME) and Rep. Mike Michaud (D-ME) will begin to collect signatures today for a possible Senate run, not because either has made a decision on a run yet, but because the filing deadlines are so tight that they have to be prepared.
To run for Senate in Maine, a partisan candidate has to collect 2,000 to 3,000 signatures from registered party members in the state. The deadline is March 15.
Were either Pingree or Michaud to jump in on the Senate side, it would also set off a race for their open House seats. In the 2nd Congressional District, the one currently held by Michaud, Maine House Minority Leader Emily Cain (D) will begin collecting signatures today for a congressional run, according to the source. House candidates will have to collect 1,000 to 1,500 signatures from registered party members by March 15 as well.