
Mitt Romney and Paul Ryan visited New Hampshire on Monday to rebut President Obama’s claims Saturday that Mr. Romney would raise taxes on the middle class. (Associated Press)

Former Massachusetts Gov. Mitt Romney, the presumptive Republican presidential nominee, and Rep. Paul Ryan of Wisconsin, his running mate, attend a town hall at St. Anselm College in Manchester, N.H., on Monday. The visit marked the first joint appearance for Mr. Romney and Mr. Ryan in New Hampshire. (Associated Press)

Rep. Paul Ryan (right), the Republican presidential running mate, listens at right as GOP presidential candidate Mitt Romney makes a point during a town-hall-style campaign event at St. Anselm College in Manchester, N.H., on Monday, Aug. 20, 2012. (AP Photo/Cheryl Senter)

Rep. Paul Ryan (right), the Republican presidential running mate, listens at right as GOP presidential candidate Mitt Romney makes a point during a town-hall-style campaign event at St. Anselm College in Manchester, N.H., on Monday, Aug. 20, 2012. (AP Photo/Cheryl Senter)

Supporters file in to hear Republican presidential candidate Mitt Romney and his running mate, Rep. Paul Ryan, speak at a town-hall event on Monday, Aug. 20, 2012, at St. Anselm College in Manchester, N.H. (AP Photo/Cheryl Senter)

Supporters file in to hear Republican presidential candidate Mitt Romney and his running mate, Rep. Paul Ryan, speak at a town-hall event on Monday, Aug. 20, 2012, at St. Anselm College in Manchester, N.H. (AP Photo/Cheryl Senter)

Republican vice-presidential candidate, Rep. Paul Ryan, R-Wis., right, introduces his mother, Betty Ryan Douglas, to supporters at a campaign rally in The Villages, Fla., Saturday, Aug. 18, 2012. (AP Photo/Phelan M. Ebenhack)

Rep. Paul Ryan, the Republican vice presidential candidate, introduces his mother, Betty Ryan Douglas, to supporters Aug. 18, 2012, at a campaign rally in The Villages, Fla. (Associated Press)