00434pab a2200133 454500008004000000100002300040245012100063260000900184300001500193362000800208650003000216650001500246773003900261180718b2008   xxu||||| |||| 00| 0 eng d  aCampbell, James E.  aThe trial-heat forecast of the 2008 Presidential vote: performance and value considerations in an open-seat election  c2008  ap.697-701.  aOct  aUnited States - President  aPresidents  aPS: Political Science and Politics