Mitt Romney the man who would be president. But who is he, really? We know about his privileged upbringing, his extraordinary success as a venture capitalist, and how he turned around the 2002 Winter Olympics. We also know that he served one term as governor of Massachusetts and enacted historic health-care reform. But, after nearly two decades on the public stage, Romneys core remains elusive to many Americans. Heres what makes Mitt Romney run.