BOSTON -- The four Democratic candidates vying for the late Edward Kennedy's Senate seat are staking out different positions on casino gambling.

City Year co-founder Alan Khazei is opposed. He warns that casinos will fundamentally change the state. He's launched an online anti-casino petition on his campaign Web site.

U.S. Rep. Michael Capuano acknowledges casinos have drawbacks but says he's not opposed. Attorney General Martha Coakley supports casinos as long as the state creates new regulations to oversee them.

Boston Celtics co-owner Stephen Pagliuca says he'd only support casinos if they were part of larger developments that included restaurants, entertainment venues and hotels.

Republican Sen. Scott Brown supports slot machines at racetracks and is open to other forms of gambling. Fellow Republican Jack E. Robinson also supports casinos.

Legislators are weighing plans to license casinos.