Then, after launching her mayoral bid following Mayor Rahm Emanuel’s decision not to seek a third term, there was the federal complaint filed against Ald. Edward Burke, 14th, in January. Federal prosecutors alleged Burke attempted to use his aldermanic control over zoning to shake down a business in exchange for legal work for his property tax-appeals law firm. Federal authorities also alleged Burke illegally solicited a $10,000 campaign contribution that sources said was intended for Preckwinkle. She denied having any knowledge of his actions, but said she would return more than $100,000 in campaign contributions she raised when the longtime alderman hosted a fundraiser for her at his home.