But if he somehow beats Allen, then he's got a senate seat, and he'd be ignoring that basically the second he got inagurated to campaign for President.
That's another good point. I'd say he should do something like Ronald Reagan did after he left the California governorship and lost the 1976 Republican nomination. He had a radio show, wrote, and remained active in political issues. I'm not sure Warner has any signature ideas the way Reagan did, or whether he is just a self-promoter.
He could also do what Nixon did in his "wilderness" years, and collect political IOU's by campaigning for Democratic (in Nixon's case it was Republican) candidates around the country.
But Nixon and Reagan were big names...
Nixon was VP and came ridiculously close to winning in 1960...
Reagan was an actor, a popular governor of CA, and came ridiculously close to winning the '76 primaries.
Warner's a one-term governor of Virginia who nobody off of this board knows.
It's certainly possible (Dean had been out of office for two years before 2004, and he was probably less known than Warner at the time)...but don't start comparing him to Nixon or Reagan. Different league entirely.