President Barack Obama obviously is scrambling in his attempt to win re-election.

DENVER -- Put away the pitchfork metaphors that are prevalent in this season of populist ferment: Colorado's Senate contest is a duel of distinguished diplomas. Tea partiers toiled mightily to nominate Ken Buck as the Republican candidate to run against Sen. Michael Bennet, who is a direct descendant of a Mayflower passenger, grandson of an economic adviser to Franklin Roosevelt and son of an official in the Carter and Clinton administrations. He attended tony St. Alban's school in Washington, D.C., and Yale Law School. Buck is a Princetonian.