ABC News has projected Bernie Moreno, who was endorsed by former President Donald Trump, will win the GOP primary for Senate in Ohio.

Ohio's Senate primary on Tuesday marked another MAGA win -- a decisive victory by a Trump-backed candidate against an establishment-favored challenger.

Businessman Bernie Moreno handily won Ohio's GOP Senate primary, scoring a win both for him and former President Donald Trump.

The special primary election to succeed Kevin McCarthy unfolded on Tuesday in California's 20th Congressional District between Vince Fong, Mike Boudreaux and others.

ABC News’ Rick Klein dissects the day’s critical Congressional primaries, including how both parties are closely watching the number of voters choosing neither Trump nor Biden.

Among voters supporting Nikki Haley in preliminary exit poll results, nearly half say they’d back Joe Biden in November.

He'll campaign in Texas on Wednesday.

Primary contests are being held in Florida, Illinois, Kansas, Ohio and Arizona. ABC News Chief Washington correspondent Jonathan Karl joins the Big Story.

Elon Musk cancels partnership with Don Lemon following sit-down interview.

The presidential nominations are locked up -- but the primaries remain, along with any tea leaves they might provide.

Trump on Tuesday formally made his case to the Supreme Court for why he should be granted sweeping presidential immunity from criminal prosecution

A lawyer for Overstock CEO Patrick Byrne acknowledged in court disseminating confidential documents from Dominion Voting Systems to law enforcement.

The additional primaries are in Arizona, Florida, Illinois, Kansas and Ohio, despite both President Biden and former President Trump already being the presumptive nominees.

Trump is ramping up the rhetoric on the campaign trail.

Ohio's GOP Senate primary is heading for a fierce finish Tuesday night as three Republicans bludgeon each other for the chance to run in a marquee contest.

Arizona election officials said they have increased efforts to make their office more efficient and transparent as they head into the 2024 election.

ABC News’ Averi Harper speaks with Maricopa County election officials who, despite death threats, are doing everything they can to prepare for the 2024 election.

538's preview of the Ohio, Illinois and California primaries on March 19, 2024.

"GMA3" co-anchor Eva Pilgrim sits with the all-women city council in St. Paul, Minnesota, to discuss representation, diversity, and their journey to city hall.

Former President Donald Trump said at a rally Saturday night there would be a "bloodbath" if he doesn’t win 2024, when railing against the electric vehicle industry.

Ahead of Biden making campaign stops on Tuesday in Arizona and Nevada, advisers are laying out why they still place him in a better position than Trump

President Biden signed an executive order Monday he said will direct the "most comprehensive set of executive actions ever taken" to address women's health.

Which Nikki Haley primary voters will break with the Republican Party in the 2024 general election?

Former Georgia Lt. Gov. Geoff Duncan now says that he will not join No Labels' potential third-party "unity" ticket in the 2024 presidential race against Trump and Biden

The third-party presidential movement No Labels voted Friday to move forward with a presidential ticket, though the hunt for candidates to lead the ticket continues.

Kimberly Zapata, a Wisconsin election official who allegedly requested mail-in ballots for three non-existent military voters, is due in court in Milwaukee.

ABC News’ Jon Karl reports on the incendiary comments made by former President Donald Trump at a recent campaign rally.

Bernie Moreno and his allies are disputing a news report detailing a years-old potential link between his personal information and a profile on Adult Friend Finder

Ohio is expected to star in this year's big races for state supreme court seats

The Biden-Harris campaign said it raised more than $53 million in February -- marking its strong month since launching in April 2023.

ABC News’ Deputy Political Director Averi Harper and ABC News’ White House correspondent MaryAlice Parks take a closer look at the top political headlines this week.

No, Nikki Haley is not going to run as a third-party candidate against Joe Biden and Donald Trump.

Former Vice President Mike Pence said Friday he "cannot in good conscience" endorse his former boss Donald Trump in the 2024 general election.

Although voting was mostly peaceful there were some protests at the polls in the race that is expected to end with another term for Vladimir Putin.

In the week since Michael Whatley and Lara Trump took control of the Republican National Committee, a new focus on "election integrity" has emerged.

Robert F. Kennedy Jr. likes that Aaron Rodgers, whom he is eyeing to be his running mate, is a "critical thinker" and is "battle tested," he said

"Civil War,” Alex Garland’s election-year provocation, debuted at the SXSW Film and TV Festival, unveiling a violent vision of a near-future America at war with itself

Biden lost the American Samoa Democratic caucuses on Super Tuesday to entrepreneur Jason Palmer

The news follows ABC News projecting that Biden and Trump will win the Georgia primaries, based on an analysis of the vote.

Robert F. Kennedy Jr.'s independent presidential campaign is approaching several key milestones as Democratic scrutiny of him ramps up

CNN Chief National Security Analyst Jim Sciutto weighs in on the biggest technology questions on Americans’ minds and shares insights from his new book, “The Return of Great Powers.”

Early polls show President Joe Biden losing to former President Donald Trump. Does that matter?

Elizabeth Schulze speaks with U.S. Secretary of the Treasury Janet Yellen and small business owners about the economy and how it could impact their vote in November.

Abortion and reproductive access are expected to be flashpoints along with inflation and foreign policy.

The race for the White House is now officially set to be a rematch between President Biden and former President Trump.

President Joe Biden and former President Donald Trump have clinched the Democratic and Republican presidential nominations, respectively, after another round of voting on Tuesday, ABC News projects.

Organizers in Washington have been leading an effort to encourage Democratic voters to cast their ballots for the "uncommitted" option over Biden in Tuesday's primary

As the 2024 presidential election nears, several third-party candidates have emerged to challenge President Joe Biden and Donald Trump, but what will be their impact on the race?

Former President Donald Trump is still short of the delegates needed to become the Republican Nominee. President Biden was projected to become the Democratic nominee before the Mississippi results.

Biden and Trump are projected to win their respective primaries in Georgia. ABC News projects Biden has reached the 1,968 delegates needed to become the Democratic candidate.