Democratic U.S. Rep. William Keating is facing a challenge from Republican John Chapman, a former administration official for Gov. Mitt Romney.
One of the biggest questions this election year is whether U.S. Sen. Edward Markey will have a challenger when he faces election to a full six-year term. The Democrat won a special election in 2013 to fill out the rest of John Kerry’s term after Kerry resigned to become secretary of state.
No Democrats are expected to run against Markey. On the Republican side, Gabriel Gomez, who lost to Markey in the special election, has been mentioned as a possible challenger, though no GOP candidate has officially entered the fray.