McCain’s Ad Response to House Attacks: Rezko

John McCain’s campaign last night jumped into the ad war over McCain’s uncertainty of how many houses he owns.

Several hours after Barack Obama’s campaign put out its own ad on the gaffe, McCain’s campaign had readied its response, which focuses on Obama’s ties to fundraiser, real estate developer, and convicted felon Antoin “Tony” Rezko, who raised money for Obama’s 2004 U.S. Senate run and helped Obama buy his Chicago home.

Rezko is emerging as the primary comeback to liberal attacks over McCain’s comment, as the Republican National Committee sought to highlight Obama’s Rezko ties in a new website it launched yesterday, circulating a fact sheet about Obama and Rezko to reporters as well.

McCain’s new TV ad will air in “key states,” according to the McCain camp.