Mayor Martin J. Walsh has won re-election in a landslide over Roxbury City Councilor Tito Jackson, cementing his position atop Boston politics and serving notice to any potential challengers.

With most of the precincts reporting, Walsh was walloping Jackson roughly 67 percent to 33 percent, with the race called early in the evening.

“Tonight, we commit once again to be a city for all of us,” Walsh told his supporters just after 10 o'clock. He vowed to “make the greatest city in the world even greater.”

Walsh went into the election up 30 percentage points in the polls after trouncing Jackson 62 percent to 29 percent in September's preliminary, and never faced a serious threat during the year-long campaign.

And the massive margin of victory gives Walsh the authority to exercise more power, a local political expert said.

"It gives him a mandate to be bolder," said former City Councilor Larry DiCara. "He will be governing from a position of strength."

In the race for City Council in Boston, unofficial results in District 2 show Ed Flynn well ahead 55 percent to 45 percent, with most of the votes counted. Flynn is the son of former Mayor Raymond L. Flynn.

In District 7, Jackson's old seat, Kim Janey is up 57 percent to Rufus Faulk's 43percent, with half the votes counted.

Walsh was feeling confident hours before the polls closed tonight, despite a predicted low voter turnout he blamed on voter fatigue.

"I feel good about tonight, I'm not going to say I don't feel good, of course I do," Walsh said outside Florian Hall. "Our vote is coming out."

Turnout was at 22 percent as of 6 p.m. and is expected to be under 30 percent. Walsh blamed fatigue with politcs at the national level rather than lack of interest in the race between himself and Jackson, but said he wanted to avoid a record low number of residents at the polls.

Voters in Charlestown and West Roxbury were leading the way with 30 percent of registered voters having reported as of 6 p.m., city officials say. Dorchester was close behind with 29 percent turnout.

"I don't want the lowest turnout in Boston's history," Walsh said.

Jackson was also out crisscrossing the city, making his case for the future of Boston in the waning hours of the campaign.

Jackson said he was “excited about what we are hearing, and seeing and feeling” out at the polls.

“I look forward to having the revolution begin tonight,” Jackson told Herald Radio. “I’m excited about bringing the whole city of Boston together. We need to see each other’s future in one another’s families.”

Voter turnout has doubled the early returns in September's preliminary but is still meeting predictions of low participation, according to city figures.