"None of these campaigns seem to be spending on any mail or digital or anything like that — at least not to the level that you would expect given the thousands and thousands of people who are going to be casting ballots in a few days,” said Josh Pugh, Michigan spokesman for For Our Future. The primarily labor-financed group is not endorsing in the primary but is focused on mobilizing potential Democratic voters to defeat Trump. It knocked on more than 250,000 doors last year.