Tuesday, Feb. 21, is the last day to register to vote to be eligible to participate in the March 20 general primary election. Voters can register at the county clerk’s office, 157 N. Main St. in Edwardsville. Voters can also register at municipal halls, township offices and libraries. Locations can be found at www.madisonvotes.com. Those registering should bring two forms of identification, one of which includes name and residence address. For more information call 618-692-6292.