The Voting Rights Act of 1965 was a landmark piece of federal legislation in the United States aimed at overcoming legal barriers at the state and local levels that prevented African Americans from exercising their right to vote as guaranteed under the 15th Amendment. Significant provisions of the Act included establishing federal oversight of voter registration in areas with a history of discriminatory practices and the outlawing of literacy tests. Despite its success in increasing voter registration and participation among African Americans, challenges remain regarding ongoing voter suppression efforts.
In light of historical and contemporary voting rights legislation, which of the following best describes a significant impact of the Voting Rights Act of 1965 on electoral behavior in the United States?