The author examines the rapid spread of common interest housing develo
pments (CIDs) throughout much of California in recent years and the po
tential consequences of that phenomenon for electoral politics. Coveri
ng 34 counties, the analysis includes census data, construction indust
ry data, and results from the statewide general election of 1994. The
study supports the view that considerations of land economics that aff
ect developers and fiscal constraints that affect local governments ar
e the dominant forces behind the spread of CID housing. The study also
suggests that this form of privatization may have underappreciated im
plications for electoral and interest group politics at the state and
local levels.