Satirists are always conservative: they assume a bedrock human norm that is being skewed by contemporary idiocy (and occasionally, like Swift, they decide that the bedrock human norm is idiocy, and then they go mad), and which they skewer back. That doesn't make them neo-liberal fascists like today's conservatives. Any true conservative would be horrified by what passes for conservativism today: rampant greed and obeisances at a throne of ideological purity unflective of basic humaneness. I would bet that Lehrer is unchanged.
Peter T.