A George Soros-linked dark money behemoth has a peculiar partner in its bid to sink voter ID expansion in Michigan—a group of Republican operatives led by a sitting Republican senator's son.

Over the past year, liberal dark money group Sixteen Thirty Fund has spent $2.5 million opposing a Republican-led petition drive to expand Michigan's voter ID requirements. Nearly $400,000 of that money has gone to Groundgame Political Solutions, a shadowy consulting firm that a trio of Republican operatives—including Sen. Roy Blunt's (R., Mo.) son, Andy Blunt.

The firm, which Blunt first registered in Delaware before expanding it to 10 other states, functions as a stealthy subsidiary to Blunt's public-facing canvassing company, HBS+. The setup has allowed Blunt and his partners, fellow Republican operatives Gregg Hartley and Meghan Cox, to rake in hundreds of thousands of dollars from deep-pocketed liberals without alienating their conservative clients.

The Sixteen Thirty Fund used its Republican allies at Groundgame to pay canvassers tens of thousands of dollars not to work on the issue.