“For the past two years, the Arizona senator has seen his institutional adversaries in the Republican establishment brought low, one by one, clearing away the obstacles to his likely presidential bid in 2008. In some cases, their well-earned misfortune can be attributed directly to him; in others, he has merely observed their fortuitous ruin. What matters is that his worst, most effective enemies are distracted, disgraced or endangered by criminal investigations, and will be in no condition to threaten him in the foreseeable future.” Salon‘s Joe Conason thinks John McCain has his party’s green light for 2008 (and sounds more excited about the prospect than I am.)