number of houses

U.S. Sen. Barack Obama's (D-Ill.) presidential campaign is requesting that New Hampshire families send in pictures of their homes and describing how many houses they own in an attempt to take advantage of a misstep by Obama's opponent.

The effort comes in response to Wednesday's statement by U.S. Sen. John McCain (R-Ariz.) that he does not know how many houses he owns. "I think - I'll have my staff get to you," McCain told a reporter from Politico during an interview."It's condominiums where - I'll have them get to you." The quote served as fuel for the Obama campaign, which released a TV ad calling the Republican out on the statement.