BOSTON (AP) - Outside groups are beginning to pour money into the U.S. Senate battle pitting Democrat Edward Markey and Republican Gabriel Gomez.
The Service Employees International Union's political action committee has reported spending more than $340,000 on voter canvassing efforts designed to encourage Markey supporters to get to the polls on election day.
Reports filed with the Federal Election Commission show the spending comes after Markey defeated fellow congressman Stephen Lynch in the Democratic primary.
During the Democratic primary, outside groups spent nearly $1.8 million supporting Markey and opposing Lynch.
That included the SEIU's Committee on Political Education, which spent nearly $320,000 to back Markey's primary bid.
The SEIU focuses on organizing workers in the health care, building maintenance and public services sectors.
The election to fill the seat left vacant by the resignation of John Kerry is June 25.