TY  - JOUR
T1  - Have Americans' attitudes become more polarized?-An update
AU  - Evans, John H.
PY  - 2003
DO  - 10.1111/1540-6237.8401005
SP  - 71
EP  - 90
JO  - Social Science Quarterly
VL  - 84
IS  - 1
SN  - 0038-4941
ER  -