"The Republican Party of Wisconsin filed a lawsuit Friday to resolve a discrepancy between state and federal law directing when appointed presidential electors must meet to cast Electoral College votes. State law requires presidential electors to meet on Dec. 16 this year, but a federal law passed two years ago calls for them to meet on Dec. 17. The state GOP is calling on a U.S. District Court of Western Wisconsin judge to enforce the federal requirement and strike the state one."