American political parties have a number of distinctive characteristics. The two major political parties have been dominant for a long period of time. The parties are permeable, meaning that people are able to join or leave the party ranks freely. The two major parties are ideologically ambiguous in that they are umbrella organizations that can accommodate people representing a broad spectrum of interests.
Publisher, A. removed at request of original. (2016). 6.1 Political Culture. https://open.lib.umn.edu/americangovernment/chapter/6-1-political-culture/