Leading up to the Super Tuesday primaries, polls indicate that the economy ranks as the number one issue on the minds of Americans, beating out immigration, global warming, even terrorism. NOW ON PBS heads to America's heartland - Illinois - to investigate rampant anxiety among America's middle class. How did families on the edge of financial collapse get to this point, and which presidential candidate do they think can restore economic hope and stability? 

On NOW's Web site, www.pbs.org/now, take an interactive quiz to test your knowledge on the pressures facing middle-class Americans.

Also online, visit the newly-launched "Adventures in Democracy" minisite. There you'll find answers to "burning questions" about American elections, a toolkit for going under the hood of American politics and political cartoons visitors can personalize with their own captions.