The perceived importance of "special interest group" money in election campaigns motivates widespread use of caps on allowable contributions. We present a bargaining model in which putting a cap that is not too stringent on the size of the contribution a lobby can make improves its bargaining...

Campaign expenditures are not effective in increasing candidates' vote shares if voters do not respond to the advertisement when they believe that campaign expenditures are financed with "tainted money". In this situation, limiting contributions may reduce the number of policy favors that...