Updated 8 p.m. |

Tierney’s campaign manager, Matt Robison, confirmed the move but said the campaign would be making additional buys next week. “We’ve relocated some of our resources among weeks based on our communications strategy,” he said.

Media buys are public information, so Tierney’s move means he could be signaling for help from an outside group in the final two weeks. But his shift comes just a couple of days after the Democratic Congressional Campaign Committee cut $650,000 worth of reservations for that week in the Boston market.

Tierney could buy more time before Election Day if he has the cash. The Congressman raised more than $500,000 in the third quarter — although his opponent, former state Sen. Richard Tisei (R), brought in  more than Tierney in the last four consecutive quarters.

“On the heels of raising half a million dollars in the last quarter, we’re going to be on TV through Election Day and have the resources we need to effectively communicate our message,” Robison added.

But Tierney’s team would be forced to fork over big bucks because of the rising cost of the already pricey Boston media market. Tierney’s cancellation included about $370,000 worth of television time in Boston.

Tisei has reserved airtime through Election Day.

Tierney made Roll Call’s Top 10 Vulnerable Members list, even though he represents a Democratic district. He’s faced bad press and a slew of negative headlines tied to his wife’s family’s legal issues, which include an offshore gambling operation. Tierney, however, has not been accused of any wrongdoing.

Roll Call rates the 6th district race as a Tossup.