Defending Main Street, the super PAC of the Republican Main Street Partnership, has gotten $400,000 in donations from two major labor organizations: The Laborers’ International Union of North America and the International Union of Operating Engineers, according to the National Journal.

Big Labor mostly donates to Democrats but has been known to send some money to union-friendly Republicans. New Jersey Republican Gov. Chris Christie was able to score some high-profile nominations for his recent re-election bid, for example. But the amount the Republican Main Street Partnership received is higher than usual, the Journal noted: