information:extraction, stylistic:style_transfer
The two-party system in the U.S.

Political scientist Nelson W. Polsby argued in 1997 that the lack of central control of the parties in America means they have become as much "labels" to mobilize voters as political organizations, and that "variations (sometimes subtle, sometimes blatant) in the 50 political cultures of the states yield considerable differences", suggesting that "the American two-party system" actually masks "something more like a hundred-party system." Other political scientists, such as Lee Drutman and Daniel J. Hopkins in 2018, argued that in the 21st century, along with becoming overly partisan, America politics has become overly focused on national issues and "nationalized".