In the United States, the major parties overlap heavily in terms of ideology, with the Democrats more to the left and the Republicans more to the right. Social scientists Theodore Caplow et al. argue, "the Democratic party, nationally, moved from left - center toward the center in the 1940s and 1950s, then moved further toward the right - center in the 1970s and 1980s. '' Small parties such as the Libertarian Party play a minor role in American politics.
which u.s. political party is considered to lean to the left
Democrats