The centerpiece of Gov. Arnold Schwarzenegger's State of the State address Thursday is expected to be a call for a mega-bond paying for infrastructure improvements statewide -- and if a recent poll is any indication, he may finally have a winner on his hands. The poll conducted just before the holidays for the California Alliance for Jobs -- the state's powerful road-building lobby -- found that 58 percent of respondents would support a state infrastructure bond of up to $40 billion, while 38 percent would oppose it. State Senate President Pro Tem Don Perata, D-Oakland, and Sen. Tom Torlakson, D-Antioch,...