Heavens to Murgatroyd! Chris Matthews has reduced Hillary Clinton to a cartoon character. Snagglepuss to be precise. "Exit stage left" was one of the Hanna-Barbera animation's catchphrases, and Matthews used it to wonder whether Hillary was prepared to leave the presidential race, given her flagging political fortunes. Here's how Matthews put it at the top of today's Hardball: CHRIS MATTHEWS: Meanwhile, listen carefully. That sound you hear is the slow falling of electoral delegates, of superdelegates, to Barack Obama. Seven more came aboard today. So with Obama way ahead in elected delegates, now trails Hillary Clinton by only four-and-a-half superdelegates....