Rep. Edward Crockett of Portland has unenrolled as a Democrat and is running for governor as an independent.

Crockett, who is in his fourth term representing parts of Portland and Falmouth, announced his candidacy Wednesday.

“My values and beliefs haven’t changed at all,” Crockett said during a phone interview Wednesday of his decision to unenroll from the Democratic Party in August. “The major parties have lost their way … and the trust of the people.”

Crockett said the “extreme partisan atmosphere” in Augusta feels similar to what the nation is seeing in the federal government, but that Maine can rise above that.

“We have to take the partisanship and the party-first mentality and put that aside,” Crockett said, adding that Maine needs a governor who will “put people first.”

Crockett already had outlined his intent to run in an opinion column published this summer.

He’s the latest politician to join the long list of candidates for governor. On the Democratic side, the list includes Secretary of State Shenna Bellows, former Maine Senate President Troy Jackson, entrepreneur Angus King III and former Maine House Speaker Hannah Pingree. The Republican candidates include Bobby Charles, the president of a consulting firm; state Sen. James Libby, R-Cumberland; and entrepreneur Owen McCarthy.

Crockett becomes the third independent in the race for governor, joining Sen. Rick Bennett of Oxford, who unenrolled as a Republican, and John Glowa.

Crockett said the majority of the candidates he’s up against at this stage of the race “are longtime traditional party candidates, and I see myself as a true independent candidate.”

The state’s string of majority budgets is a symptom he would address if elected, he said.

“I believe that was a key point that really made the last few sessions incredibly divisive and unproductive,” Crockett said.

There are a number of subjects Crockett recognized that Maine will need to tackle, including affordable housing, health care, education and the environment, and he said the state can be successful in addressing them by working together.

“We can accomplish it if we bring civility and cooperation, with the hope of compromise, back to the State House,” he said.