This chapter explores the ideologies and dynamics of party politics in the United States of America. It discusses the differences between Democrats and Republicans and their impact on society. The focus has shifted from being party-oriented to being more candidate-oriented, with people aligning themselves with the vision of the candidate as the determinant factor of voting preference. The party system has become service-based, with parties winning the confidence of the masses by promising the delivery of preferred services. Voting choices vary based on the demographic structure of the region and the interests of different sections of the population.