In 2008, I supported Barack Obama over Hillary Clinton in the Democratic primaries. I would have backed Hillary in the general, happily. But I saw Obama as somewhat to Hillary's left, and I saw him as a superior campaigner who would make a stronger candidate.
This year, I am voting for Hillary Clinton. She is strongest general election candidate the Democrats have this year, she will make a more effective president than any other Democrat in the field, and she is far better qualified than any other candidate in either party. My decision could not be simpler.