David Browne is handling media, Marc Silverman of Thirty-Ninth Street Strategies is the pollster, Doug Hasson of Bridge Communications is running direct mail and Stephanie Mellinger is Cartwright's fundraiser.
Holden, a Blue Dog, is sticking with the consultants who have helped him return to Congress every two years for much of the past two decades: Alan Secrest and Joe Trippi. Secrest has been a Holden strategist since 1992 and Trippi since 2002. Sue Hothem of Benchmark Strategies is Holden's fundraiser.
Jessica Brady contributed to this report.
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Former Sen. Scott Brown, R-Mass., candidate for U.S. Senate in New Hampshire, holds his hand over his heart during the singing of the national anthem as he waits to take the stage for his town hall campaign rally with Sen. John McCain at the Pinkerton Academy in Derry, N.H., on Monday, Aug. 18, 2014.