What's so super about Tuesday? According to Wikipedia, today "the largest-ever simultaneous number of state U.S. presidential primary elections will be held. Twenty-four states and American Samoa are scheduled to hold either caucuses or primary elections for one or both parties." If the environment and energy-efficiency are important topics in your voting, you may want to check out these two articles before you head to the polls. "How Green Is Your Candidate?" from The Grist and "Super Tuesday Guide to Green Voting" from The Daily Green help you compare the candidates' positions on all things green.