BOSTON -- Primary day carries some uncertainty for John Kerry for the first time in his 24 years in the Senate.

Kerry faces his first challenger in a Democratic primary since he was elected in Tuesday's election.

Gloucester attorney Ed O'Reilly says he took on the 2004 Democratic presidential nominee because he was disgusted with Kerry's vote to authorize military action in Iraq.
Elsewhere in the state, Stockbridge attorney Robert Feuer is challenging U.S. Rep. John Olver in the Democratic primary.

In Lexington, two Democrats are competing to replace state Sen. James Marzilli, who is accused of sexually harassing four women in one day in Lowell. And Boston state Sen. Dianne Wilkerson, who has suffered from a series of self-inflicted blunders, has a rematch with Sonia Chang-Diaz.

Secretary of State William Galvin says he expects voter turnout to be low, because there is only one statewide race.

-- The Associated Press