%0 Journal Article %T Party Polarization and Party Structuring of Policy Attitudes: A Comparison of Three NES Panel Studies %A Layman, Geoffrey %A Carsey, Thomas %J Political Behavior %V 24 %N 3 %P 199-236 %@ 0190-9320 %D 2004-10-10 %I Kluwer Academic Publishers-Plenum Publishers %~ DeepDyve