A Democratic primary took place on Tuesday, resulting in a win for Sen. Ed Markey. He defeated challenger Rep. Seth Moulton, securing his party's nomination. The bid by Rep. Moulton was centered on age and generational change.

The primary was a generational showdown, with Sen. Markey ultimately emerging victorious. Details of the primary are available from the source.

Further information about the primary and its outcome can be found through the source, which reported on the Democratic primary and Sen. Markey's win over Rep. Moulton.