MONTPELIER, Vt. — Google executive and former Vermont lawmaker Matt Dunne announced Wednesday he is running for the Democratic nomination for governor in 2016.

Dunne faces a primary contest against House Speaker Shap Smith, who announced his candidacy two weeks ago, and possibly against Transportation Secretary and former lawmaker Sue Minter, who has said she’s seriously considering getting into the race. The only announced Republican so far is retired Wall Street executive Bruce Lisman, who entered the race Tuesday. Lt. Gov. Phil Scott also has indicated he’s a likely candidate.

“Over the last few months I have been speaking with many of you about the challenges Vermont is facing. From those conversations, it is clear that our state is at a critical juncture. Vermonters are looking for a fresh approach,” Dunne said in a statement emailed to supporters.

The 45-year-old Hartland resident said he had raised more than $200,000 for the run before making the official announcement.

Dunne will continue with a series of community forums around the state and will have a formal campaign kickoff later in the fall, he said.

Dunne, who was elected to the state House at 22 and later served in the Senate, lost in a five-way race for the Democratic gubernatorial nomination in 2010.