00438pab a2200145 454500008004000000100001700040245008100057260000900138300001400147362000800161650003800169650002200207700002500229773003800254180718b2006   xxu||||| |||| 00| 0 eng d  aAdams, James  aWhy small centrist third parties motivate policy divergence by major parties  c2006  ap.403-17.  aAug  aPolitical parties - Great Britain  aPolitical parties  aMerrill, Samuel, III  aAmerican Political Science Review