This study investigates differences in grass-roots party activity for
the Democratic and Republication presidential candidates in 1992. Chai
rs of the party organizations and the presidential campaign organizati
ons in a national sample of counties reported considerable variation i
n relative parry effort at the county level in 1992, with the Democrat
s generally outperforming their GOP rivals. Four factors were examined
as potential sources of these differences: electoral conditions at th
e state and county levels, capacities of the local organizations, inte
gration of the local organizations into the national campaign, and res
ponsiveness of the different local parties to one another. Only the re
lative organizational capacities of local party organizations (but not
presidential campaign organizations) and integration of local and nat
ional organizations mere strongly related to interparty activity diffe
rences, which confirms the importance of the standing local party orga
nizations and the modern ''coordinated campaign'' for grass-roots part
y effort on behalf of presidential candidates.