This post has been updated. It was originally published Nov. 1, 2013.

As voters head to the polls this November, citizens in more than a dozen states will face shifting voter policies in wake of the Supreme Court's 2013 decision weakening protections of the Voting Rights Act of 1965.

Several states — such as Texas, North Carolina and Ohio — are facing legal challenges to new restrictions around voter ID, early voting or same-day registration.

Meanwhile, some have moved to loosen voter restrictions. Oregon and Florida have dropped out of the Interstate Cross-Check Program, an effort to purge duplicate voter registrations from voter rolls in different states. Also, as of June 2014, online voter registration has been made available in 20 states.

With the midterms approaching, here's an updated look at the state of voting rights around the country.

Remind me – what is Section 5 of the Voting Rights Act?

Under the Voting Rights Act, states and localities with a history of racial discrimination needed to get permission from the federal government to enact any changes to their voting laws, in a process called “preclearance.” As of June 2013, nine states, mostly in the South – Alabama, Alaska, Arizona, Georgia, Louisiana, Mississippi, South Carolina, Texas and Virginia – needed to get any new voting laws pre-approved. Some counties and townships in California, Florida, New York, North Carolina, South Dakota and Michigan were also subject to preclearance.

Section 5 first applied to states that imposed literacy tests or other unfair devices, and had low voter registration or turnout. Congress later expanded the law to add jurisdictions with sizable minority populations and English-only election materials.

States and localities could “bailout,” or get off the preclearance list, after 10 years of elections without any problems. Several smaller jurisdictions bailed out over the years, including parts of Connecticut, Idaho, Maine, Massachusetts, Wyoming, Hawaii, and Colorado.

Of course, some of the biggest voting law battles of the 2012 election were in states not covered by Section 5 at all, such as Pennsylvania and Ohio.

What did the Supreme Court rule in Shelby County v. Holder?

The Supreme Court decided, 5-4, that the preclearance formula was now unconstitutional under the 10th Amendment, which gives states the power to regulate elections. The Court ruled that the coverage formula was “based on 40-year-old facts having no logical relation to the present day.”

From the decision:

One important technical point: the Supreme Court actually left Section 5 of the Voting Rights Act – the part of the law that describes how preclearance works – intact. Instead, the Court struck down Section 4, which explains which states and localities are subject to preclearance. If Congress amends Section 4, the Justice Department can start enforcing Section 5 again.

Why does this matter?

While literacy tests are a thing of the past, voting rights advocates say that statutes that limit early voting and registration, require voters to show photo ID, and purge voter rolls still disproportionately affect poor and minority voters.

The Supreme Court’s June 2013 decision also effectively shifted the burden from states to citizens. Before, a state subject to preclearance had to demonstrate that a new voting law was not discriminatory and let voting law experts in the Justice Department evaluate it before it could be implemented. Now it is up to voters to challenge voting laws by filing lawsuits under Section 2 of the Voting Rights Act, which prohibits racial discrimination.

But most court cases involving Section 2 have been limited to redistricting, not other controversial voting measures, says Yale University law professor Heather Gerken.

“With redistricting, there’s always one very wealthy political party or another who can hire some very good lawyers and go into court and challenge it,” Gerken said. “But a lot of the types of things that were challenged under Section 5 were smaller questions, like, ‘Can you change a polling place? Can you shut down early voting hours in ways that might affect the black community?’ There are things smaller than redistricting that can fall through the cracks.”

What have preclearance states done since the Supreme Court ruling?

a NORTH CAROLINA: Two months after the Supreme Court decision, North Carolina passed a number of measures, including strict new photo ID requirements. The law also eliminates same-day voter registration, shortens the early voting period by seven days, and specifies that ballots cast at the wrong polling station will be thrown out. Some changes will be phased in starting in 2014, and the photo ID provision goes into effect in 2016.

The North Carolina NAACP and a civil rights group called the Advancement Project have filed a lawsuit challenging the changes. The Justice Department also filed a suit of its own. But the suits venture into some new legal territory.

“What North Carolina did was definitely at the extreme of practices in this country,” Gerken said. “So if anything is vulnerable to a suit, it’s likely to be the North Carolina law. But again, the case law was built around redistricting cases. It wasn’t built around this kind of work.”

2014:

September: Last month, a federal judge refused to order an injunction against North Carolina's voting law, which eliminates same-day voter registration, shortens early voting and introduces new voter ID requirements at the polls. The judge ruled that the new measures did not demonstrate "irreparable harm" to North Carolina voters. The 4th U.S. Circuit Court of Appeals will hear challenges to the law Sept. 25.

October: In October, the U.S. Supreme Court blocked a federal appeals court decision that would have allowed same-day voting.

q TEXAS: Last year, a federal court rejected Texas’ voter ID law, calling it “the most stringent in the country.” The panel also rejected the state’s redistricting maps, finding that they protected white incumbents while altering districts with minority incumbents.

But on the very day of the Supreme Court ruling, Texas Attorney General Greg Abbott said the state would “immediately” enact both measures.

The photo ID law requires voters to present an approved form of photo identification, where before they could present mail, utility bills or other proof of voter registration. The Justice Department had refused to approve the law based on the state’s findings that Hispanic registered voters were far less likely to have the approved photo IDs. The new law also requires the photo ID presented on voting day to match the state’s voter rolls — complicating voting for some married women and others with name changes.

The Justice Department has filed a lawsuit against the newly enacted photo ID requirements and joined an ongoing lawsuit against the disputed redistricting maps.

October 2014: A federal judge had blocked the state’s voter ID law in early October, but a panel of three judges in the Fifth Circuit Court of Appeals stayed the decision in an Oct. 14 ruling, keeping the law in place for November elections. The Supreme Court also upheld the Lone Star State’s ID law in an order issued Oct. 18.

I FLORIDA: After the Supreme Court ruling, Florida resumed its plans to remove non-citizens from its voter rolls using the federal SAVE (Systematic Alien Verification for Entitlements) database. The Department of Homeland Security database helps government agencies check the immigration statuses of people applying for government benefits like drivers’ licenses, housing assistance, or Medicaid.

But opponents of Florida’s measure say that SAVE data is faulty and not meant for elections, and that using the database to verify voter rolls will disenfranchise eligible voters. (Colorado legislators rejected a bill to purge rolls based on SAVE data for this very reason, but that didn’t stop Secretary of State Scott Gessler from moving ahead with the plan.) The Miami Herald found that Florida voters flagged for verification were disproportionately Hispanic, and most turned out to be citizens. The Department of Justice has also said that SAVE is not meant to be “a comprehensive and definitive listing of U.S. citizens,” especially since it doesn’t include data about people born in the United States.

A nonprofit group has challenged the law, but a federal court dismissed the lawsuit after the Supreme Court ruled that Florida was no longer subject to preclearance. Another group has appealed a similar case to the 11th Circuit.

September 2014: The 11th Circuit Court of Appeals ruled 2-1 in April that Florida's 2012 voter purging violated the National Voter Registration Act. The ruling came as the state decided to postpone further purging efforts until 2015. In a memo to county election supervisors, Florida Secretary of State Ken Detzner said the state was awaiting a new federal database on ineligible voters to be up and running.

Meanwhile, Florida has expanded voting accessibility on other fronts, expanding early voting this election season. The state also dropped out of a controversial inter-state voter registration cross-check project.

s VIRGINIA: Virginia passed a number of voting laws this spring that seem likely to go into effect in wake of the Supreme Court ruling.

The Virginia legislature passed a photo ID law last year (which the Justice Department approved), but the more recent measure goes further to limit what kinds of voter identification are acceptable. Voters can no longer show utility bills, bank statements, government checks or paychecks before they vote, but they can get an ID for freeif they don’t already have one.

The new laws also require the Virginia State Board of Elections to remove ineligible voters by comparing state voter rolls with the SAVE database and other states.The Democratic Party of Virginia has sued the state over the interstate crosschecks, contending that the database has erroneous information and the law will disenfranchise poor, elderly and minority voters, but a federal judge rejected the suit for lack of evidence. As of Oct. 17, the Board of Elections had already purged more than 38,000 voters.

September 2014: The Virginia State Board of Elections decided in August that voters must now present a current photo ID or one that is within one year of its expiration date. "We believe it's a compromise and gives people a reasonable grace period," said election board member Donald Palmer. The state also implemented an online voter registration system last year.

n SOUTH CAROLINA: In October 2012, a federal court blocked the implementation of South Carolina’s photo ID law until 2013. The court found that although the law was not discriminatory, there was not enough time to implement changes before the 2012 election. South Carolina Attorney General Alan Wilson said the Supreme Court ruling now allows states to “implement reasonable election reforms, such as voter ID laws similar to South Carolina’s.”

Y MISSISSIPI: Secretary of State Delbert Hosemann said Mississippi will enact a strict photo ID law by 2014. The state says it will provide free transportation to government offices where voters will be able to obtain free photo IDs.

September 2014: According to the Clarion-Ledger, Mississippi's latest photo ID requirements caused "few problems" when implemented for the first time during June primaries.

B ALABAMA: Secretary of State Beth Chapman said Alabama would also enact changes to its photo ID law by 2014. Like Virginia, Alabama used to accept other kinds of non-photo identification, such as utility bills and Social Security cards. But the new law requires voters to present photo IDs (the state will also provide free voter IDs to those who don’t have them). Legislators passed the measure in 2011, but Alabama stalled in submitting the law for preclearance.

September 2014:Alabama moved ahead with plans to enforce proof-of-citizenship for potential voters after a federal court upheld similar laws in Arizona and Kansas this past March.

D ARIZONA: The Supreme Court issued another significant ruling on voting laws this summer: In Arizona et al. v Intertribal Council of Arizona, Inc. et al., the Court ruled that Arizona, formerly a preclearance state, could not unilaterally require voters to show proof of citizenship before registering to vote in a federal election. But the Court said Arizona could sue the Election Assistance Commission to get the federal voter registration form amended to require proof of citizenship. Now, both Arizona and Kansas have sued the commission.

In case their legal challenges are unsuccessful, the states are setting up two-tiered systems of voter registration, requiring proof of citizenship for state and local races but not federal ones. So far, Kansas has suspended registration for about 17,500 voters until those they submit proof of citizenship.

September 2014: This past March, a federal judge ruled that the federal government must help Arizona and Kansas enforce proof-of-citizenship laws for potential voters. Civil rights groups appealed the decision, and the 10th U.S. Circuit Court of Appeals heard their case in August. Two other states with similar proof-of-citizenship laws, Georgia and Alabama, also filed a friend-of-court brief in support of Arizona.

Meanwhile, Arizona Secretary of State Ken Bennett told the Arizona Capitol Times that only 21 voters who registered using the new two-tiered system were ineligible to vote in state and local races during the state's Aug. 26 primary.

o SOUTH DAKOTA: Four Directions Inc., a Native American voting rights group, has asked the Justice Department to investigate why Secretary of State Jason Grant has so far refused to use federal money to fund satellite voting centers for registration and early voting on some Native American reservations.

What about non-preclearance states?

The 35 states that were not subject to any kind of preclearance were unaffected by the Supreme Court decision. But several of those states have also moved to tighten voting rules this year.

C ARKANSAS: This spring, Republican legislators overrode the governor’s veto to pass a law requiring voters to show photo IDs. If voters don’t have them, they can cast provisional ballots and return with IDs by the Monday after the election. The state will also provide free IDs to people who do not already have them.

September 2014: The Arkansas ACLU sued the state over the photo ID law on behalf of disenfranchised voters, and the Arkansas Supreme Court is slated to hear arguments in the case on Oct. 2.

L IOWA: In late March, Iowa implemented an administrative rule allowing Secretary of State Matt Schultz to begin a voter roll purge using the SAVE database. Activists have sued Schultz in an attempt to stop the purge.

September 2014: In March, a Polk County judge permanently struck down Iowa Secretary of State Matt Shultz's plans to purge voter rolls.

O INDIANA: In May, Indiana enacted a law requiring officials to check voter rolls for individuals registered to vote in other states. The advocacy group Project Vote worries that the measure could lead to voter purges.

September 2014: In May, Indiana began the process of purging inactive voters by sending postcards to all registered voters. For any marked undeliverable, the state will attempt a second post card before deeming voters inactive. If the voter doesn't vote in the next two federal elections, he or she will be struck from voter rolls. The state has so far moved almost 700,000 voters to its "inactive" list according to the Indianapolis Star.

Z MONTANA: After Democratic Gov. Steve Bullock vetoed a measure that would have eliminated same-day voter registration, the legislature decided to let the people decide. In 2014, Montana citizens will vote in a referendum on whether to keep same-day registration. Backers of the measure say it will cut down on lines at the polls.

c NEBRASKA: This spring, Nebraska shortened early voting by 10 days. Voters will still be able to vote in the 25 days leading up to an election.

b NORTH DAKOTA: North Dakota is the only state without voter registration. In April, the state strengthened its voter ID law to no longer allow people without photo ID to vote by affidavit.

p TENNESSEE: This spring, Tennessee passed a bill restricting the kinds of IDs that can be used to vote. Previously, voters could show student IDs, out-of-state IDs, library cards, or any other IDs issued by counties or municipalities. Now only photo IDs issued by the state of Tennessee or the federal government are acceptable. The Green Party of Tennessee has sued the state over the law.

September 2014: A federal district court dismissed the Green Party's case in February, after a state court also upheld the ID law.

States to watch:

v WISCONSIN

October 2014: The U.S. Supreme Court blocked Wisconsin’s voter ID law, originally slated to go into effect this November, in an Oct. 9 ruling.

i OHIO

In February, Ohio Secretary of State Jon Husted proposed cutting the state's early voting period. The changes would have eliminated Sunday and some weeknight voting hours, as well as a six-day "golden week" when potential voters could register and vote on the same day. In September, a federal district judge issued a preliminary injunction ordering Ohio to restore these early voting periods. The state has asked the court to stay their decision ahead of the November election.

A separate suit challenged a 2012 Ohio directive that would have eliminated early voting on the weekend before to the election only for non-military voters. A federal district court ruled the directive unconstitutional in June 2014, and Husted has since restored the early voting period.

However, on Sept. 29, hours before early voting was scheduled to begin for the Nov. 4 elections, the U.S. Supreme Court issued an order blocking a “golden week" of early voting in the state. The court was responding to an emergency appeal from Husted. Early voting in the state began on Oct. 7 instead of Sept. 30.

So, where does all of this leave the Voting Rights Act?

The Supreme Court left it up to Congress to write new preclearance criteria. In a July hearing, House Republicans showed little interest in rewriting Section 4. But Senate Judiciary Committee Chairman Patrick Leahy, D-Vt., says there’s actually quiet Republican support for the issue. Rep. Jim Sensenbrenner, R-Wis., made headlines when he publicly supported restoring the law.

“There is at least one Republican, and you’ll find out in the future a lot more, that is committing to putting life in this most important civil rights act that got a stab in the back from the Supreme Court,” Sensenbrenner said.

Gerken, the law professor, isn’t optimistic that Congress will come up with a new Section 4 formula. But she said there are other actions Congress could take. For example, she has advocated that Congress adopt an “opt-in” approach and allow civil rights groups to file simple complaints for the Justice Department to investigate. Then the agency could halt the implementation of discriminatory laws as necessary.

Yale law professor Travis Crum has also suggested a “bail-in” measure, by which Congress could instead strengthen Section 3 of the Voting Rights Act, letting courts put states under preclearance if their voting laws violate the 14th or 15th amendments.

As part of the Justice Department’s lawsuits against Texas and North Carolina, the federal agency has asked the courts to put those states back under preclearance.

September 2014: As of March, an amendment was introduced in both the House and Senate that would make Georgia, Louisiana, Mississippi and Texas the only remaining preclearance states. Once the states are "bailed in," their voting and election laws would be subject to review for 10 years.

This post will be kept up-to-date. Has your state or local government restricted voting rights since June 2013? Tweet at me, email me at [email protected] or leave a comment below.