This analysis reflects on the importance of political parties, and the poli
cies they implement when in government, in determining the level of equalit
ies/inequalities in a society, the extent of the welfare state (including t
he level of health care coverage by the state), the employment/unemployment
rate, and the level of population health. The study looks at the impact of
the major political traditions in the advanced OECD countries during the g
olden years of capitalism (1945-1980)-social democratic, Christian democrat
ic, liberal, and ex-fascist-in four areas: (1) the main determinants of inc
ome inequalities; (2) levels of public expenditures and health care benefit
s coverage; (3) public support of services to families; and (4) the level o
f population health as measured by infant mortality. The results indicate t
hat political traditions mon committed to redistributive policies (both eco
nomic and social) and full-employment policies, such as the social democrat
ic parties, were generally more successful in improving the health of popul
ations. The erroneous assumption of a conflict between social equity and ec
onomic efficiency is also discussed. The study aims at filling a void in th
e growing health and social inequalities literature, which rarely touches o
n the importance of political forces in influencing inequalities.