Bulletin Today | PoliticsBy Brian Bakst of The Associated Press ST. PAUL, Minn. (AP) — Third-party candidates Gary Johnson and Virgil Goode are blips in the presidential race. They have little money, aren’t on stage for presidential debates and barely register in the polls — when survey takers even bother to list them as options. Yet in a tight race between Democratic President Barack Obama and Republican challenger Mitt Romney that likely will be won or lost at the margins, even blips can …