
U.S. Representative Niki Tsongas (D-Lowell) will not seek re-election in 2018, she announced Wednesday morning.
Tsongas, 71, the widow of former U.S. Senator Paul Tsongas (1941-1997), was first elected in October 2007, in a special election to replace Marty Meehan, who left Congress to become chancellor of the University of Massachusetts at Lowell.