MADISON, Wis. — The Republican Party of Wisconsin on Tuesday filed a formal complaint with the state’s election and campaign watchdog accusing Trek Bicycle Corp., owned by the family of Democrat gubernatorial candidate Mary Burke.

The GOP accuses Wisconsin-based Trek of using corporate dollars to aid and defend Burke’s campaign.

On Sunday, Trek ran a full-page advertisement in the Milwaukee Journal Sentinel to “attack Governor (Scott) Walker and reinforce Mary Burke’s longstanding talking points,” the GOP charges. Similar ads reportedly ran in other newspapers in Wisconsin.