State Senator Katherine M. Clark bested six Democratic rivals Tuesday, winning her party’s nomination in the race to succeed Edward J. Markey in the US House of Representatives and setting her on course to likely become the state’s newest member of Congress.
Clark, a Melrose lawyer captured 31.6 percent of the vote. Middlesex County Sheriff Peter J. Koutoujian and state Representative Carl M. Sciortino trailed with 22 percent and 16.1 percent, respectively.
As the Democratic nominee in a liberal district north and west of Boston — one that voted by more than 30 percentage points for President Barack Obama over Mitt Romney last November — Clark is now the strong favorite going into the December general election. She will face Frank J. Addivinola Jr., the Republican nominee, who won the Republican primary Tuesday night. Full story for BostonGlobe.com subscribers.