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"Glenwood Springs City Council members voted Thursday to sue the owner of the building where U.S. Immigration and Customs Enforcement is running a short-term detention facility in violation of city zoning rules, hoping to avoid a more risky legal confrontation with the federal government as it attempts to stop the operation."

Mail voting is under unprecedented federal pressure heading into the 2026 midterm elections. From the White House to the Supreme Court to Congress, a series of developments is threatening a form of voting that tens of millions of Americans rely on—and that was relatively uncontroversial until just a few years ago. This explainer examines how mail voting became a partisan battleground, what the current federal threats mean for mail voting, and what states, election officials, and advocates can do in response.

Litigation over election results serves an important role in legitimizing the democratic process, but when these challenges drag on for months, they can undermine that legitimacy and leave citizens without representation. North Carolina’s 2024 Supreme Court race, for example, took six months of post-election litigation to resolve, and some observers worry that similar delays could affect control of Congress in 2027. This Explainer examines the gaps in state laws that increase the risk of prolonged election contests and shows how state supreme courts can use their supervisory and rulemaking powers to ensure prompt resolution of such proceedings.

As part of President Trump’s efforts to expand federal control over the country’s historically state-run election infrastructure, the U.S. Department of Justice has demanded copies of states’ complete voter registration lists, including voters’ highly sensitive data like birthdates, partial Social Security numbers, and driver’s license numbers. The Justice Department has filed 31 federal lawsuits (so far)—against 30 states plus Washington, D.C.—seeking orders compelling these jurisdictions to turn over their data. This tracker monitors the Justice Department’s lawsuits.

The U.S. Justice Department has demanded states' complete, unredacted vote registration lists. States have mostly declined to provide their full, unredacted voter registration lists. This report examines the questions raised by the federal government's demands about the long-established authority of states to administer elections and the scope of the federal government’s role in the voter registration process.

Federal laws and institutions have long played a central role in addressing public corruption. This report considers the potential for states to play a more central role in addressing public corruption. To date, the vast majority of state public corruption prosecutions have involved misconduct by state or local officials. But beyond addressing public corruption at the state and local levels, state law also provides an underexplored pathway for deterring and punishing corrupt conduct at the federal level.

This report explores when states can or cannot pursue prosecutions against federal officials and what that has looked like in practice. This practice stretches back to at least the early 1800s, but it comes with a mixed track record.

Following the 2024 election, we updated our survey of election-related lawsuits to help understand the role of litigation in our elections. This update underscores key themes from our survey of litigation from 2018 to 2022: litigants continue to file election suits at high rates, primarily in state courts, and most often presenting claims related to election administration and the mechanics of voting.

Ahead of Election Day 2024, courts—and especially state courts—continue to be inundated with election-related lawsuits. As in 2020, courts may see a deluge of post-election litigation as well. A recurring question in these pre- and post-election cases is whether the plaintiffs waited too long to sue. Under the longstanding equitable doctrine of “laches,” courts sometimes reject claims as untimely even when plaintiffs satisfy the applicable statute of limitations if, in fairness, the claims should have been brought sooner. This Research Note offers a 50-state survey of laches doctrine in the election context.

Every campaign season brings renewed attention to the amount of money influencing American politics, and who is spending it, and for what purposes. In particular, people are concerned about what is called “dark money.” The term sounds scary and raises the specter of shadowy people manipulating the nation’s politics. This piece unpacks what dark money is, what concerns it raises and what might be done to address it.