Pat Selby, election counsel for Project Vote in Michigan, said she had been hearing from confused voters all day about the question.

"Having the question on the box is a source of confusion. Election officials knew it wasn't to be enforced but individual poll workers didn't understand," she said. "And there were places where it was on the form and places where it wasn't on the form. Instructions should have come out from the Secretary of State right after the veto."

In Detroit, the citizenship question was on the ballot application, because they were printed before Snyder's veto.