Sharon resident Marty Farren has withdrawn from the Fourth Congressional District race after, he says, the Secretary of State's office told him he wasn't registered as a Democrat.

Farren said Wednesday he learned of the error while submitting signatures toward getting on the ballot.

"I had two weeks left to go and I had 2,200-something signatures from some 32 towns, and the Secretary of State was like, 'You're not a Democrat. You can run as an Independent. You'd have to get new signatures because your sheets all say Democrat,'" Farren said.

"I came to the town hall and they said, 'You're not a registered Democrat.' So, I'm a registered Democrat now. It stopped me dead in the water. Not a thing you can do."

Farren said the Sharon town clerk's office had had him listed as a registered voter.

He said he registered as a Democrat four days after learning the news.

"What happens now is, I don't know. I really don't know," Farren said.

"I was running because there's conversations that I think we need to have. I think that a lot of our political conversation is very polarized. When the goal becomes to get 50.1 percent of the population so that you can implement the policies you think are right, then polarizing works for that goal. That doesn't work for the country, I don't think."

Farren is the latest candidate to drop out of the race the seat that Congressman Barney Frank does not plan to run for again this year.

Brookline resident and Democrat Julius Levine dropped out last week. Attleboro Democrat Paul Heroux dropped out in March.

The remaining candidates are Democrats Joseph Kennedy III and Herb Robinson, LaRouche Democrat Rachel Brown and Republicans Elizabeth Childs, former Fourth District challenger Sean Bielat and Fall River dentist David Steinhof.