Republican presidential candidate Mitt Romney, right, with his laptop at hand, sits with his family by Lake Winnipesaukee on Saturday, July 14, 2012, at his home in Wolfeboro, N.H.

Republican presidential candidate Mitt Romney plays on a floating board with friends and family on Lake Winnipesaukee in Wolfeboro, N.H., July 6, 2012.

Mitt Romney dives into Lake Winnipesaukee in Wolfeboro, N.H., on July 6, 2012, as he continues his vacation with his family from the campaign trail.

Mitt Romney, seen at right next to his wife Ann, drives his boat out of his vacation home with his grandchildren seated on the bow on Lake Winnipesaukee in Wolfeboro, N.H. on July 5, 2012, as he continues his weeklong vacation from the campaign trail.

Republican presidential candidate and former Massachusetts Gov. Mitt Romney, center, plays volleyball with his sons at their vacation home on Lake Winnipesaukee in Wolfeboro, N.H., on July 3, 2012.

Republican presidential candidate Mitt Romney, right, and his wife Ann, left, have Bailey's Bubble ice cream in Wolfeboro, N.H. on July 2, 2012, with their family as they continue their vacation from the campaign trail.

Republican presidential candidate Mitt Romney, rear left, and his wife Ann, with their grandchildren in the bow of their boat, depart from the public docks on Lake Winnipesaukee in Wolfeboro, N.H. on July 2, 2012, as they continue their vacation from the campaign trail.

Republican presidential candidate Mitt Romney drives a John Deere tractor with some of his grandchildren at his vacation home on Lake Winnipesaukee in Wolfeboro, N.H. on July 2, 2012.

Republican presidential candidate Mitt Romney, and wife Ann, walk with their grandchildren across Main Street in Wolfeboro, N.H. on July 2, 2012, as they continue their vacation from the campaign trail.

Republican presidential candidate Mitt Romney and wife Ann Romney ride a jet ski on Lake Winnipesaukee in Wolfeboro, N.H. on July 2, 2012, where Romney has a vacation home.

Republican presidential candidate Mitt Romney, his wife Ann, and family members sit on the beach in front of their vacation home on Lake Winnipesaukee in Wolfeboro, N.H. on July 2, 2012. The Romneys take this week each year for family time, including the "Romney Olympics."

Republican presidential candidate Mitt Romney is seated with his sons Craig, left, and Tagg, right, at his vacation home on Lake Winnipesaukee in Wolfeboro, N.H. on July 1, 2012.

Republican presidential candidate Mitt Romney, center, walks with son Josh, rear center, at his vacation home on Lake Winnipesaukee in Wolfeboro, N.H. on July 1, 2012.

On July 1, 2012, Republican presidential candidate Mitt Romney arrives at The Church of Jesus Christ of Latter-Day Saints in Wolfeboro, N.H. Romney, the first Mormon to clinch the presidential nomination of a major party, attended services Sunday with his wife, Ann, five sons, five daughters-in-law and 18 grandchildren during the family's vacation in the area.

Mitt Romney, left, takes a walk with his wife, Ann, on the beach after a campaign stop at Holland State Park on June 19, 2012 in Holland, Mich.

Mitt Romney paints Easter eggs with his grandchildren. The presidential nominee is grandfather to 18.