Seeking to build a sense of urgency for November, First Lady Michelle Obama told a group of 400 campaign supporters in Iowa today that the election could come down to only a “few thousand folks.”

“I just want you to remember that in the end, this all could come down to those last few thousand people that we register to vote. It could all come down to those few thousand folks we need to help to get to the polls in November,” the first lady told the crowd of volunteers at a community center in Windsor Heights, a Des Moines suburb.

“I have said this before, Iowa, and you’ve heard me say it. He cannot do this alone. He needs you to help him,” she said.