Endorsements are a simple language for communication between interest-group
leaders and group members. The members, who share policy concerns, may not
perfectly understand where their interests lie on certain issues. If their
leaders cannot fully explain the issues, they can convey some information
by endorsing a candidate or party. When interest groups endorse legislative
contenders, the candidates may compete for backing. Policies may favor spe
cial interests at the expense of the general public. We examine the conditi
ons under which parties compete for endorsements, the extent to which polic
y outcomes are skewed, and the normative properties of the political equili
bria. (JEL D72).