In the 2025 New Jersey gubernatorial election, Mikie Sherrill won by 16 percentage points after pre-election polls showed an eight-point margin

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As of November 2026, the average polling error across recent United States election cycles is approximately three to four percentage points

The final New York Times poll for the 2026 Michigan Senate election showed Abdul El-Sayed leading Republican candidate Mike Rogers 53 percent to 42 percent

Federal Judge Sharon Gleason dismissed a Trump administration lawsuit seeking to block Alaska officials from certifying Senate election results if incumbent Dan S. Sullivan lost

Democratic Representative Haley Stevens lost the Michigan Democratic Senate primary election to Abdul El-Sayed by approximately one percentage point

The United States Department of Justice announced plans to appeal Federal Judge Sharon Gleason's dismissal of the Alaska Senate election lawsuit

Donald Trump won the state of Kansas by 16 percentage points in the 2024 presidential election

The Kansas Senate reelection contest between Republican Senator Roger Marshall and Democrat Adam Hilton was rated a toss-up

Federal Judge Sharon Gleason ruled the federal court lacked authority to order Alaska officials to investigate ballots cast for Dan J. Sullivan Jr.

The United States Department of Justice filed an appeal after a federal judge dismissed its lawsuit regarding the Alaska U.S. Senate election ballot

Federal Judge Sharon Gleason ruled the Trump administration failed to provide a workable plan to isolate and investigate ballots cast for challenger Dan J. Sullivan Jr.

A U.S. District judge dismissed a Department of Justice lawsuit attempting to block Alaska from certifying its U.S. Senate election results if incumbent Republican Dan Sullivan lost

As of November 2026, the state of Texas has not elected a Democratic candidate to the United States Senate since the 1980s

Following the November 1960 presidential election, Republicans launched challenges to investigate voting results in Illinois, Texas, and New Jersey

Richard Nixon officially conceded the 1960 United States presidential election to John F. Kennedy at midday following election night

In the 1960 United States presidential election, John F. Kennedy defeated Richard Nixon in the national popular vote by approximately 112,000 votes

The United States Department of Justice filed a lawsuit seeking to block certification of Alaska's Senate race results if Republican incumbent Dan S. Sullivan lost

The Cook Political Report assessed that roughly two-thirds of the congressional districts redrawn to favor Republicans after 2024 became competitive toss-up races

In an NPR poll heading into the 2026 midterms, 32 percent of Americans approved of Donald Trump's job performance as president

A PBS News/Marist poll found that voters favored Democrats over Republicans on the 2026 congressional ballot by eight percentage points

A Washington Post poll in Kansas recorded a 32 percent response completion rate among Democrats compared to 12 percent among Republicans