A Springfield political reporter says he’s resigned after being put on temporary leave when Republican governor candidate Bruce Rauner’s campaign accused him of having a conflict of interest.

Dave McKinney was the Chicago Sun-Times’ Springfield bureau chief.

He wrote a letter Wednesday to the CEO of Sun-Times’ parent company, Wrapports LLC.  It says he resigned because he believes the owners improperly influenced newsroom decisions.

The incident stems from a story McKinney co-wrote about a lawsuit alleging Rauner threatened a former employee. Rauner’s campaign called the story “irresponsible.” It asked the Sun-Times to acknowledge that McKinney’s wife is a Democratic media consultant “in the interest of transparency.”

McKinney denies the conflict claim and the newspaper’s editor publicly backed him after a “review.” Rauner is a former investor in parent company Wrapports.