2008 Democratic Primary with different candidates

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Interesting primary.

The results:

Senator Russ Feingold (WI)  -- dark red
Senator Evan Bayh (IN) -- pink
Governor John Lynch (NH)  -- green
Governor Ted Strickland (OH)  -- light blue
Fmr. Governor Mark Warner (VA)  --dark blue
Fmr. Governor Tom Vilsack (IA)  -- grey

Feingold competes well in most of the big states, but Warner sweeps the rest of the country after the early primaries.

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I don't have any particular love for Mark Warner; in fact, I like Feingold a lot better and would vote for him over Warner in a primary any day.  But these things aren't supposed to be about who I want to win, but who I think would win.  I just tend to think Warner would be an appealing candidate in a primary race and a general election.  What makes you guys think he would do poorly, and, who do you think would beat him on the list above and where?