A veterans group launched an ad campaign Wednesday aimed at five Democratic senators facing reelection and Senate Majority Leader Harry M. Reid (D-Nev.) that presses them to support a VA accountability measure.

Concerned Veterans for America says it is putting a six-figure investment behind its "Walk the Walk" campaign. Online and TV ads will target Democratic Sens. Mark Pryor (Ark.), Kay Hagan (N.C.), Mary Landrieu (La.), Jeanne Shaheen (N.H.), Mark Warner (Va.) and Reid, the group said. Overall, the effort will span 10 8 states and 10 11 senators and members of Congress over three weeks.

As The Post's Matea Gold reported earlier this year, Concerned Veterans For America was part of a network of conservative groups backed in 2012 by a donor network arranged by the billionaire industrialist Koch brothers.

"President Obama won't hold the VA accountable. Sen. Mark Pryor can. But he's done nothing," says the ad targeting Pryor. In concludes: "Call Sen. Pryor and tell him to stand up for our veterans."

The group is urging passage of the "The Department of Veterans Affairs Management Accountability Act of 2014," which cleared the House last week. If passed by the Senate and signed into law, the measure would empower the secretary of Veterans Affairs to "remove any individual from the Senior Executive Service if the Secretary determines the performance of the individual warrants such removal."

The group also praised Republican and Democratic members for co-sponsoring the measure.

Updated at 3:18 p.m.