The Vote Mittmageddon: Why Mitt Romney faces an electoral day of truth Tuesday

Mitt Romney now faces 'Mittmageddon,' a single day upon which his political future may depend. Republican primaries in Michigan and Arizona Tuesday are nearly a must-win.

Gerald Herbert/AP

Mitt Romney has been running for president virtually nonstop for five years. After all that time and tens of millions of campaign dollars spent, he now faces “Mittmageddon,” a single day upon which his political future may depend.