The TPM Electoral Scoreboard is powered by PollTracker.com, the most accurate and up-to-date poll tracking and averaging service on the web. Our Scoreboard is designed to be highly reactive to the twists and turns of public opinion: only states with a 2-point margin or less go into the ‘Tossup’ category. We also keep editorial assignment of states to an absolute minimum: as long as poll data is available, we let the numbers tell the story.