Candidates in Massachusetts' most closely watched congressional contest are raking in hundreds of thousands in campaign donations as the race heads toward the September primary.
During the past three months, Republican candidate and former state Sen. Richard Tisei raised the most — nearly $424,000 — ending June with $820,000 in his campaign account.
Incumbent Democrat U.S. Rep. John Tierney collected more than $415,000, bringing his cash total as of June 30 to more than $1.2 million.
Democratic challenger and former U.S. Marine Seth Moulton raised about $414,000 in the past three months, ending June with $791,000 in his account.
Another Democrat, Marisa DeFranco, raised about $11,000 during that past quarter, ending June with $30,000 in her account.
Republicans see the 6th Congressional District as their best hope of picking up a seat in Massachusetts.