The ProJo is confirming a story broken on Twitter by harddeadlines: Portsmouth Rep. Dan Gordon (?-71) failed to gather enough signatures on his nomination papers, and is out of the running for his seat in the legislature.

The ProJo confirmed with Portsmouth canvasser Madeline Pencak that Gordon had only collected 28 valid signatures, leaving him 22 short of the 50 required to be placed on the November ballot.

According to tweets by Dan McGowan, Gordon said he would mount a write-in campaign and that he should just "need to work a little harder."

Gordon says he still has national support from libertarians. "I just need to work a little harder now."

— Dan McGowan (@danmcgowan) July 13, 2012

Full disclosure: I am a supporter of Dennis Canario (who is now running unopposed.)