Mark concentrates in the field of election and campaign finance law, with a specific focus in taxation of political entities as well as legislation and the legislative process. He has been named a Rising Star in Political Law by Super Lawyers Magazine in 2010, 2011 and 2012.

Mark has previously been employed by the Ohio Senate, clerked at the Ohio 10th District Court of Appeals, and externed for the Chief Justice of the Ohio Supreme Court. He represents and advises candidates, lobbyists, political action committees, and ballot issue committees. He also represents charities and other nonprofit organizations regarding state and federal laws involving lobbying and political activities. He assists clients with compliance with campaign finance and election laws, local and statewide ballot initiatives and referenda, legislative drafting and all other matters involving legislation and elections.

McGinnis holds a B.S. from The Ohio State University and completed his law degree Certificate in Governmental Affairs, and LL.M. in Taxation from Capital University Law School. He is licensed to practice before all state and Federal courts in Ohio as well as the United States Tax Court, the United States Court of Appeals for the Armed Forces, and the Supreme Court of the United States.