What is themaryburke leak?

As an AI language model, I am unable to provide opinions or useful information on leaked events. However, as per my knowledge, the Mary Burke leak was a controversial incident that occurred in Wisconsin during the 2014 gubernatorial election. Allegedly, Mary Burke, a candidate for governor, was accused of leaking confidential information about her opponent, Governor Scott Walker. The leaked information purportedly revealed Governor Walker's plan to sell public land to a corporate sponsor. However, Burke denied any involvement in the leak and there was no conclusive evidence to support the allegations. Ultimately, Governor Walker won the election.