From FDR in the 1930s on , some have argued that parties should be polarized . We 're seeing consequences of Dems as liberal party , GOP as conservative one , authors say . Comment: Gergen , Zuckerman : Obama , Romney have been firing up ideological base of their parties .
From FDR in the 1930s on , some have argued that parties should be polarized . We 're seeing consequences of Dems as liberal party , GOP as conservative one , authors say . They say this has led to gridlock and the loss of talented leaders who can work with other party . Gergen , Zuckerman : Obama , Romney have been firing up ideological base of their parties .