Ayanna Pressley is set to become the first African-American woman elected to the US Congress in Massachusetts. 44-year-old Pressley defeated 10-term Democratic Representative Michael Capuano Tuesday to secure the Democratic nomination to run for the U.S. Congress. The upset victory sets the stage for Pressely to represent an area once served by Tip O’Neill and John F. Kennedy. Her win is also the latest in a streak of a primary season in which black democratic politicians have made a series of advances against established rivals before the November 6 election. In Connecticut, Jahana Hayes is on track to become the first black woman to win a congressional seat, in that state, if she prevails in November. In Florida, Georgia and Maryland, black politicians have won the Democratic nomination for governor – the US has only elected two black governors in its history. Democrats need to win 23 seats to take back the majority in the House of Representatives.