BOSTON — Republican Richard Tisei has conceded the race for the 6th Congressional District to Democratic incumbent Rep. John Tierney.

Democratic U.S. Rep. John Tierney has been re-elected in Massachusetts’ 6th Congressional District despite a fierce challenge from Republican Richard Tisei, who will likely challenge the results.

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GLOUCESTER, Mass. — The entire 30-second spot for Richard Tisei features a gentle tide rolling in at sunset on picturesque Good Harbor Beach in Gloucester.

WBUR’s Democratic analyst says U.S. Rep. John Tierney has followed a reelection strategy that created a contest he could not win.

PEABODY, Mass. — Rep. John Tierney says the GOP’s campaign against him is raising the “noise so loud” that issues are being ignored.

NEEDHAM, Mass. — Tisei accused Rep. Tierney of being dishonest with voters about what he knew of an illegal offshore gambling ring run by two brothers-in-law.

WAKEFIELD, Mass. — Republican congressional candidate for the 6th Congressional District Richard Tisei says he’s optimist about beating 16-year incumbent Democratic Rep. John Tierney.

BOSTON — The race has attracted $4.5 million from political action groups across the country, making it the most expensive congressional race in New England.

BOSTON — Outside groups have poured more than $4.5 million into the race between Rep. John Tierney and Republican challenger Richard Tisei.

NEWTON, Mass. — Democratic U.S. Rep. John Tierney and Republican challenger Richard Tisei held their fourth debate Thursday night.

Few candidates enjoy the kind of “perfect storm” that enabled Sen. Brown to win his seat. But Richard Tisei, a moderate Republican, is riding a similar wave.

LYNN, Mass. — The North Shore candidates’ first debate was contentious nearly from the start.

BOSTON — U.S. Rep. John Tierney has released six years of tax returns ahead of his first debate with his Republican challenger Richard Tisei.

A schedule of debates planned for the presidential and vice presidential race, the U.S. Senate race in Massachusetts, and the state’s 4th and 6th Congressional Districts.

BOSTON — Republicans consider the 6th Congressional District race the best chance they have of unseating a Democratic congressman in Massachusetts.

BOSTON — Democratic Rep. John Tierney leads his Republican challenger, former state Sen. Richard Tisei, by seven points, according to our new poll.

Our Democratic analyst writes that the differences between the race’s two main rivals are more fundamental than charges about their families.