Nick Zaharias of Derry, N.H., a public witness, loads a test ballot into a vote counting machine while testing machines before the New Hampshire primary, at the Derry Municipal Center, Tuesday, Jan. 16, 2024. (AP Photo / Charles Krupa)

With Ron DeSantis ending his 2024 campaign and endorsing Donald Trump on Sunday, the Tuesday primary becomes the first one-on-one matchup between Trump and Nikki Haley.

Republican presidential candidate former President Donald Trump takes the stage at a caucus night party in Des Moines, Iowa, Monday, Jan. 15, 2024. (AP Photo / Andrew Harnik)

About 7 in 10 Iowans who caucused for Donald Trump on Monday night said they have known all along that they would support a man who has remade the Republican Party through his “Make America Great Again” political movement. 

Former President Donald Trump attends the closing arguments in the Trump Organization civil fraud trial at New York State Supreme Court in the Manhattan borough of New York City, Thursday, Jan. 11, 2023. (Shannon Stapleton / Pool via Reuters)

Donald Trump’s decision to launch into a monologue at the conclusion of his lawyers’ closing arguments reflected the fact that the civil fraud trial is a serious threat to Trump’s business and brand – New York Attorney General Letitia James is seeking to bar Trump from doing business in the state

University of Chicago professor Robert Pape appears on “Chicago Tonight” on Jan. 9, 2024. (WTTW News)

Saturday marked the third anniversary of the Jan. 6 attack on the U.S. Capitol by supporters of then President Donald Trump.

Rioters storm the U.S. Capitol on Jan. 6, 2021. (CNN)
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A legal challenge from five voters has made Illinois the 18th state forced to grapple with whether former President Donald Trump should be disqualified from the 2024 ballot.

FILE - Former President Donald Trump points to supporters during rally Dec. 19, 2023, in Waterloo, Iowa. (Charlie Neibergall / AP Photo, File)

The court will be considering for the first time the meaning and reach of a provision of the 14th Amendment barring some people who “engaged in insurrection” from holding public office. The amendment was adopted in 1868, following the Civil War.

The Illinois State Board of Elections building is pictured in Springfield. (Peter Hancock / Capitol News Illinois)

A group of five voters filed a joint objection to former President Donald Trump’s candidacy, arguing that he should be disqualified under the 14th Amendment to the U.S. Constitution, which prohibits anyone who took part in an insurrection against the U.S. from holding federal office.

Donald Trump is pictured in a file photo. (CNN)
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Former President Donald Trump has been kicked off the ballot in both Maine and Colorado. At issue is whether Trump is disqualified from making another presidential run under the 14th Amendment due to engaging in insurrection.

Former President Donald Trump speaks during a rally Sunday, Dec. 17, 2023, in Reno, Nev. (AP Photo / Godofredo A. Vásquez, File)

First, Colorado’s Supreme Court ruled that former President Donald Trump wasn’t eligible to run for his old job in that state. Then, Maine’s Democratic secretary of state ruled the same for her state. Who’s next?

Former President Donald Trump greets supporters as he arrives at a commit to caucus rally, Tuesday, Dec. 19, 2023, in Waterloo, Iowa. (Charlie Neibergall / AP Photo)

The decision follows a ruling earlier this month by the Colorado Supreme Court that booted Trump from the ballot there under Section 3 of the 14th Amendment. That decision has been stayed until the U.S. Supreme Court decides whether Trump is barred by the Civil War-era provision.

Election worker Donna Young inspects a mail-in ballot for damage at the Sacramento County Registrar of Voters in Sacramento, Calif., June 3, 2022. (AP Photo / Rich Pedroncelli, File)

Many of the concerns from four years ago persist: the potential for cyberattacks targeting voter registration systems or websites that report unofficial results, and equipment problems or human errors being amplified by those seeking to undermine confidence in the outcome.

Former President Donald Trump listens as he speaks with reporters while in flight on his plane after a campaign rally at Waco Regional Airport, in Waco, Texas, March 25, 2023, while en route to West Palm Beach, Fla. (AP Photo/Evan Vucci, File)

The court said Wednesday it will not hear an appeal of a lower court’s ruling from groups seeking to keep Donald Trump from appearing on Michigan's primary election ballot.

Former President Donald Trump listens as he speaks with reporters while in flight on his plane after a campaign rally at Waco Regional Airport, in Waco, Texas, March 25, 2023, while en route to West Palm Beach, Fla. (AP Photo / Evan Vucci, File)
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The ruling is a win for Trump and his lawyers, who have sought repeatedly to delay this and other criminal cases against him as he seeks to reclaim the White House in 2024.

Former President Donald Trump speaks at a campaign rally, Saturday, Dec. 16, 2023, in Durham, N.H. (AP Photo / Reba Saldanha, File)

The Colorado decision marked the first time in history the provision has been used to prohibit someone from running for the presidency, and the U..S. Supreme Court is likely to have the final say over whether the ruling will stand.

Former President Donald Trump speaks during a rally Sunday, Dec. 17, 2023, in Reno, Nev. (AP Photo / Godofredo A. Vásquez, File)

The decision from a court whose justices were all appointed by Democratic governors marks the first time in history that Section 3 of the 14th Amendment has been used to disqualify a presidential candidate.

Former President Donald Trump speaks at a campaign event, July 8, 2023, in Las Vegas. (AP Photo / John Locher, File)

Nevada, Wisconsin, Arizona and Pennsylvania are among the states were Donald Trump fake electors are still involved in the 2024 election.