Wyoming
A dated list of changes to how Americans vote: district maps, polling places and drop boxes, voting laws and rules, and courts and election officials. Each entry says who did what and when, shows what became of it, and links to the page it rests on. Attempts that failed are listed as failed. Entries that rest on a news report name the outlet.
This is the state view: events recorded for Wyoming, then national events that apply here. See the national timeline.
In Wyoming
2019
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Fremont County attorney finds no poll-worker violations in 2018 reservation voting
KOWB reported on May 29, 2019 that the Fremont County Attorney's Office, reviewing voting on the Wind River Indian Reservation in the 2018 general election after a request from the state Democratic Party, concluded there were "no violations of election law by poll workers on an Indian reservation." The complaints concerned voter ID confusion and voters being asked to read an oath aloud. The county clerk said "no one was prevented from voting."
- Wyoming prosecutor finds no violations in reservation voting ↗ News report, KOWB
Source last checked Oct 20, 2026
Nationwide
2017
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Homeland Security designates election infrastructure as critical infrastructure
On January 6, 2017, Homeland Security Secretary Jeh Johnson said he had determined "that election infrastructure in this country should be designated as a subsector of the existing Government Facilities critical infrastructure sector." The statement defines election infrastructure as including "storage facilities, polling places, and centralized vote tabulations locations" and voter registration databases and voting machines.
Source last checked Oct 29, 2026
How this timeline is built
Every entry rests on at least one source that was opened and read, and that source states the date and the fact. Courts, legislatures, election offices, the Justice Department, the Census Bureau, the Federal Register and Congress.gov come first. A news report is used only when no official page states the fact, and it is labeled with the outlet's name. Encyclopedias are not used as sources. History starts in 1965 with the Voting Rights Act. County names come from the Census Bureau's 2024 Gazetteer. Congressional district numbers are those in use for the 2026 election; an event is tagged to a district only when its source names that congressional district.
When a later event changes an earlier one, such as a law later struck down, both entries are listed and point to each other. This page does not predict outcomes or say which party a change helps. U.S. House maps for 2026 · How people voted in past elections, by county · Back to the 2026 voting center.