TY - JOUR T1 - The Impact of Presidential Campaigning on Midterm U.S. Senate Elections AU - Cohen, Jeffrey E. AU - Hamman, John A. PY - 1991 SP - 165 EP - 178 JO - American Political Science Review VL - 85 SN - 0003-0554 UR - http://www.jstor.org/stable/1962883 ER -