The American political scenario has undergone important changes since the beginning of the 1990s. The most outstanding of such changes is the return of the wave of conservatism. In the period, there have been three major political elections, two presidential and one primary. Their results all point to the renewed rise of conservatism. Such a rise is so drastic that it has profound impacts on the economic and social policies of the American Administration, quickening its change from liberalism to conservatism and exercising important influence on American politics. Based on the analysis of the three elections, the author explores the causes for the rise of conservatism and its impacts on the federal policies partisan politics and ethnic relations.