Or just flirting pre-’07? Bob Novak:

At a dinner party in a private room of a Los Angeles restaurant attended by eight Democratic politicians, I was asked to assess the political scene. I concluded with a preview of the distant events of 2008. While there had not been so open a race for the Republican nomination since 1940, I said, Clinton was dominant for the Democrats. For someone who is neither an incumbent president nor vice president to have apparently locked the nomination so early is without precedent.
As I made this analysis, the liberal Democratic functionary across the table from me shook his head in disagreement. He left his seat between courses, and then returned with this announcement: ”There are eight Democrats in this room. I’ve taken a little poll, and none of them — none — are for Hillary for president. They think she is a loser.”