Can 80-year-old Democrat Ed Markey clinch another US Senate term?

Age on the agenda in Massachusetts but octogenarian leftwinger leads younger rival Seth Moulton in primary poll Democrats have spent the summer ousting long-serving incumbents in primaries across the country. On Tuesday, Massachusetts voters will decide whether that generational revolt extends to the 80-year-old Ed Markey, whose younger Democratic rival has argued that the incumbent is simply too old to serve another term. But the Senate primary in this heavily Democratic state flips a central…