Voters are being herded to the polls in Zimbabwe's election today. Opposition leader Morgan Tsvangirai, who withdrew from the race amid the horrific violence and intimidation from the ruling party of Robert Mugabe, called it "a shameful humiliation, another tragic day in our nation's history." Citing the pressure on citizens who are being forced to participate in the sham poll, he advised them to cooperate as necessary, saying "God knows what is in your heart. Don't risk your lives." Here's what's happening: