One-time GOP rivals John McCain and Rudy Giuliani bonded over hot dogs and twizzlers in front row seats by the New York Yankees dugout Sunday, providing a snapshot of a possible Republican ticket. A reporter disguised as a fan shouted to McCain, "How about Rudy for vice president?" The presumptive Republican nominee, casually dressed in sunglasses, a collared shirt with rolled sleeves and his Navy baseball cap, just smiled and waved.