News that Karl Roves PAC, American Crossroads, has bought ads attacking Hillary Clinton has sent the Democrats stock soaring in Las Vegas, where oddsmakers now say she is virtually guaranteed to be the next President of the United States. People were bullish on Hillary before this, said Tracy Klugian, a leading Las Vegas oddsmaker for over forty years. But the Rove thing makes it a lock. After American Crossroadss historic string of defeats in 2012, Serious gamblers wait to see who Rove is supporting and then bet the house on the other side. The oddsmakers only concern, he added, was that Roves involvement in the race will dry up all interest in betting on Republican candidates for 2016: Right now Im offering Marco Rubio at ninety thousand to one and I aint getting a bite. While acknowledging that theres no sure thing in the world of gambling, Mr. Klugian said that for professional gamblers, betting against Karl Rove is as good as it gets. Hes the LeBron James of losing, he said. 