Former President Donald Trump boasted Friday that Teamsters General President Sean O’Brien has accepted his invitation to speak at next month’s Republican National Convention in Milwaukee.

It’s a big get for Trump, who is edging ahead of President Biden in polling with groups that have traditionally backed Democrats for decades, including union members.

One survey this year found Biden and Trump tied at 47% among union members in the six closest swing states Biden won in 2020, Arizona, Georgia, Michigan, Nevada, Pennsylvania and Wisconsin.