The Voting Rights Act of 1965 included Section 2, which banned any standard, practice, or procedure resulting in denial or abridgement of the right to vote on account of race and applied nationwide on a permanent basis.
Section 4(b) provided the coverage formula. It defined covered jurisdictions as States or political subdivisions that maintained tests or devices as prerequisites to voting and had less than 50 percent voter registration or turnout in the 1964 presidential election. Section 5 required that no change in voting procedures in covered jurisdictions could take effect until approved by federal authorities in Washington, D.C. The initial covered jurisdictions included Alabama, Georgia, Louisiana, Mississippi, South Carolina, Virginia, and 39 counties in North Carolina and one in Arizona.
Congress reauthorized the Act in 1970 for five years and extended the coverage formula to jurisdictions with a voting test and less than 50 percent registration or turnout as of 1968, adding counties in California, New Hampshire, and New York. In 1975, Congress reauthorized the Act for seven years, extended coverage to 1972 data, amended the definition of test or device to include English-only materials in certain language-minority areas, and brought in Alaska, Arizona, Texas, and additional counties in other states. The 1982 reauthorization lasted 25 years without changing the coverage formula but allowed political subdivisions to bail out if they met specified conditions over the prior ten years.
In 2006, Congress reauthorized the Act for another 25 years without altering the coverage formula based on 1960s and 1970s data, though it expanded the prohibitions in Section 5 to forbid voting changes with any discriminatory purpose or that diminished the ability of minority citizens to elect their preferred candidates. Shortly after that reauthorization, a Texas utility district challenged the Act's constitutionality, and in Northwest Austin Municipal Utility District No. One v. Holder decided in 2009, the Court resolved the case on statutory grounds while expressing serious doubts about the Act's continued constitutionality.
In 2010, Shelby County, located in the covered jurisdiction of Alabama and which had not sought bailout, sued the Attorney General in Federal District Court in Washington, D.C., seeking a declaratory judgment that Sections 4(b) and 5 are facially unconstitutional along with a permanent injunction against their enforcement. The District Court upheld the Act in 2011, finding the evidence before Congress in 2006 sufficient to justify reauthorizing Section 5 and continuing the Section 4(b) coverage formula. The D.C. Circuit affirmed in 2012 after surveying evidence including Attorney General objections to voting changes, successful Section 2 suits, federal observers, and the deterrent effect of Section 5.
Census Bureau data showed that in 1965 the gap between white and black voter registration in the six originally covered States ranged from 22.8 percent in Virginia to 63.2 percent in Mississippi. By 2004 those gaps had narrowed to between negative 3.8 percent and 10.8 percent. By the most recent election African-American voter turnout exceeded white turnout in five of the six States. The Attorney General objected to 14.2 percent of proposed voting changes in the first decade after enactment but only 0.16 percent in the last decade before the 2006 reauthorization. The Supreme Court granted certiorari in 2012.
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