polling site at brooklyn museum in new york. abc news reporter stephanie ramos is live for us. >> reporter: jessica and reggie, the battle for midterms has come down to immigration for republicans and health care for democrats. the president in the end motivating people from both parties to go day president trumpt wte in missouri, he laid out the stakes of the election. >> we have to elect a republican congress. we have to do it. >> reporter: the president on his final push continuing to fuel fear about illegal immigration. >> democrats are caravan after caravan of illegal aliens. >> reporter: there's no evidence democrats have anything to do with the caravan of my grans fleeing violence and poverty former president obama out on the trail this past week. >> unlike some people, i don't just make stuff up when i'm talking. i have facts to back me up.