Welcome to At the Races! You can keep track of House and Senate races with this weekly newsletter. Subscribe here. We want to hear what you think. Email us at at email@example.com with your questions, tips or candidate sightings. — Simone Pathé and Bridget BowmanThis week … Trump is wading into another special election, Democrats went after one of their own and Tim Pawlenty said “no thanks” to a Senate run.