Abstract
Researchers have generally stressed the limited influence of PAC contributions on roll calls. The author contends that an important reason for the failure to confirm an impact stems from the nature of issues and PACs studied. To demonstrate the point, this research is targeted at circumstances of particular promise for PAC influence involving issues of low visibility with little competition among organized groups and featuring PACs with strong potential for centralized decision making. Results of the analysis indicate an impressive impact and imply that the potential for PAC influence on roll calls may be greater than is commonly perceived. Still open is the question of how much impact PAC contributions have in legislative roll calls generally.
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