Republican presidential candidate Mitt Romney pauses July 17, 2012, during a campaign event at Horizontal Wireline Services in Irwin, Pa. (Associated Press)
**FILE** GOP presidential hopeful Mitt Romney speaks at an event at Horizontal Wireline Services in Irwin, Pa., on July 17, 2012. Pennsylvania is considered a battleground state, even though the state went for the Democrats in 2008. (Associated Press)
GOP presidential hopeful Mitt Romney speaks at an event at Horizontal Wireline Services in Irwin, Pa., on Tuesday. Some GOP strategists say Mr. Romney has been slow to respond to attacks by the president and his allies, and needs to go on offense. (Associated Press)
Supporters cheer for Republican presidential hopeful Mitt Romney at a campaign event at Horizontal Wireline Services on Tuesday in Irwin, Pa. He accused the president of practicing "crony capitalism.” (Associated Press)
** FILE ** Republican presidential candidate Mitt Romney (right) prepares to speak on Friday, Nov. 3, 2011, at the town hall in Exeter, N.H., as former Gov. John Sununu pulls up his socks. (Associated Press)