Marissa Fessenden writes about a campaign to get Barack Obama and Mitt Romney to address important scientific issues in the run-up to the 2012 presidential election. ScienceDebate.org and Scientific American have posed a set of questions to the candidates, as well as congressional leaders, and they're rallying support for those questions to be answered before the election. The responses will be published and graded for citizens to see. The questions include topics such as biosecurity, climate change, the safety of food and water supplies, vaccination, and environmentally sustainable energy. This comes at a time when the basic scientific literacy of elected officials is under heavy scrutiny.