Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Joe Kennedy Mulls US Senate Run Against Markey in Massachusetts Associated Press BOSTON - Massachusetts Rep. Joe Kennedy III, a scion of one of America's most storied political families, is taking steps to challenge Sen. Edward Markey in the 2020 Democratic primary, setting the stage for what could be a bitter intraparty battle split along generational lines. It's rare for challengers to take on incumbent senators, and such a move would be provocative at a time when Democrats are trying to wrest control of the Senate from Republicans. The potential matchup is notable because there doesn't appear to be a deep ideological divide between the two lawmakers. But this is a time of churn in the Democratic Party, with a younger generation asserting itself, as seen in the presidential contest and in the House, where Rep. Alexandria Ocasio-Cortez of New York overtook a seasoned party leader in a primary race last year. .