A Democratic Senate primary is underway, with an 80-year-old senator seeking six more years in office. The contest pits longtime Sen. Ed Markey against Rep. Seth Moulton. Despite his long tenure in Washington, Markey is positioning himself as the anti-establishment candidate. The race is characterized by language of left-wing insurgency, but underlying issues appear to be more about ambition and securing Democratic power.

Further details about the primary are available from the source. The outcome of this increasingly contentious primary will determine the senator's fate.

The primary is taking place in Massachusetts, a deep blue state.