TY  - JOUR
T1  - Ambiguity in the Issue Positions of Presidential Candidates: A Causal Analysis
AU  - Campbell, James E.
PY  - 1983
SP  - 284
EP  - 293
JO  - American Journal of Political Science
VL  - 27
IS  - 2
SN  - 0092-5853
UR  - http://www.jstor.org/stable/2111018
ER  -