WORCESTER, Mass. (AP) — U.S. Rep. Seth Moulton, a moderate Massachusetts Democrat, secured enough delegate support Saturday to appear on the state’s primary ballot as he challenges incumbent U.S. Sen. Ed Markey in this year’s Senate race. Yet even though Moulton cleared a key hurdle to continue his Senate bid, it was Markey who won the party’s endorsement after winning more than 50% of the delegation’s support. “You have a choice, you have to decide what the future looks like and what you’re going to demand,” Markey said Saturday in front of more than 4,000 delegates. Markey won nearly 73% of the delegates’ support, while Moulton won nearly 27% of the vote. Massachusetts Democratic Party rules require statewide candidates to get at least 15% of delegate support to appear on primary ballots.…