Incumbent, 80, beats back challenge from Seth Moulton, who argued Markey was too old to be effective at his jobSenator Ed Markey won the Democratic primary in Massachusetts on Tuesday, beating back a challenge from Seth Moulton, a congressman who tried to unseat him by arguing to voters his opponent was too old to be effective at his job.Massachusetts is heavily Democratic, making the senator favored to win a third full term in the November general election, where he faces the Republican nominee... Internewscast Journal Internewscast Sen. Key points and original sources are listed below.

• Incumbent, 80, beats back challenge from Seth Moulton, who argued Markey was too old to be effective at his jobSenator Ed Markey won the Democratic primary in Massachusetts on Tuesday, beating back a challenge from Seth Moulton, a congressman who tried to unse...S1

• Internewscast Journal Internewscast Sen. Ed Markey cruised to victory Tuesday in Massachusetts’ Democratic Senate primary,… This Post: Ed Markey Wins Massachusetts Democratic Senate Primary, Defeating Seth Moulton first appeared on Internewscast JournalS2

• The race centered on whether Markey, 80, was too old to serve a third term in the Senate. The longtime liberal stalwart will be 86 by the end of his next term.S3

• Democratic Sen. Ed Markey defeated Rep. Seth Moulton in the Senate primary in Massachusetts, NBC News projects, in a victory for the party’s progressive wing.S4