For many years, social scientists have reported that southerners expre
ss lower levels of tolerance vis-a-vis unpopular groups than nonsouthe
rners. Some researchers have suggested that these widely observed regi
onal variations are due to the prominence of fundamentalist Protestant
ism in the South. In analyses of data from the 1988 General Social Sur
vey, however, this hypothesis receives only partial support. Substanti
al regional differences in tolerance of left-wing groups, including co
mmunists, atheists, and homosexuals, persist despite controls for a ra
nge of religious variables. We suggest that future research on regiona
l differences in public attitudes should consider contextual as well a
s individual religious factors.