Jeb Bush gets the question at just about every public appearance these days: Will you run for president? The former Florida governor gives a well-worn answer: "I can honestly tell you that I don't know what I'm going to do." It's an answer that won't satisfy the GOP faithful for much longer. With New Jersey Gov. Chris Christie facing multiple investigations in a political retribution probe, many Republicans see Bush as a potent alternative: a two-term GOP governor who thrived in the nation's largest swing-voting state and could make the party more inclusive. Friends and advisers say he is seriously...