538 looks at Republican voters' second choices in the primary and who could gain or lose support if a major candidate drops out.

President Joe Biden will make a speech in the battleground state, where he is expected to define this race as an urgent fight for democracy and call out opponent Donald Trump.

President Joe Biden heads to Pennsylvania on Friday as the GOP presidential candidates make their final appeal to voters in Iowa. ABC News’ Alison Kosik has more.

Wisconsin’s Democratic governor opposes keeping Republican Donald Trump off the ballot in the battleground state, saying that those who think he should be disqualified “can vote against him."

Nikki Haley said she was trying to have some fun and was joking when she commented that New Hampshire would have an opportunity to "correct" the results of Iowa.

ABC News’ Rick Klein talks about how candidates are hitting the trail as the Iowa caucus and the New Hampshire primaries loom.

Colorado's Supreme Court had barred him from the state's GOP primary ballot.

Nikki Haley spoke to a crowd in New Hampshire Wednesday night, emphasizing that primary voters have the opportunity to “correct” the results of the Iowa caucuses.

Donald Trump's chances to win the Republican primary are very high.

Former President Donald Trump's campaign is hitting Nikki Haley with a new TV ad in New Hampshire.

Gov. Ron DeSantis was questioned by one of his own supporters Wednesday, asking why he hasn't gone after former President Donald Trump more directly.

A new Trump ad is slamming Nikki Haley as she pulls into second place in the New Hampshire polls. Meanwhile, the former president is taking his Colorado ballot battle to the Supreme Court.

ABC News' Jay O'Brien previews the upcoming Iowa caucus and New Hampshire primary; early indicators of which candidates may go further in the race for president.

Christie explains his recent comments on Trump’s removal from the primary ballots in Colorado and Maine: "My preference would be to have us vote him out."

Christie weighs in on the federal government’s role in legislating abortion and how he thinks voters’ sentiment toward Trump might change ahead of Super Tuesday.

ABC News’ Alex Presha is on the ground in Iowa where the campaign trail is heating up with just weeks until the state’s caucuses.

Checking in on the state of the Republican presidential primary race in Iowa and New Hampshire.

The first-in-the-nation Iowa caucuses are less than two weeks away, and the candidates are crisscrossing the state to share their plans with caucusgoers.

This comes as President Joe Biden and Vice President Kamala Harris are set to hold the first campaign event of 2024 on Jan. 6 in Valley Forge.

In a filing, Trump argues that Maine Secretary of State Shenna Bellows, a Democrat, is a "biased decisionmaker" and has "no legal authority" to rule on federal constitutional issues.

The under-the-radar elections to watch in 2024.

The presidential race isn’t the only thing on the ballot.

Polls show former President Donald Trump has a strong hold on the state.

ABC News’ Linsey Davis speaks with Maine’s Secretary of State Shena Bellows, who has faced harassment and backlash after removing Trump from Maine’s primary ballot.

According to polls, Iowa voters appear to want Donald Trump as the 2024 GOP presidential candidate. The Iowa caucuses are less than two weeks away, and the former president is ahead in the polls.

The Iowa caucuses are set for Jan. 15 and mark the first critical contest of the GOP Presidential race; and cities across the country scramble to accommodate soaring numbers of migrants.

ABC News political director Rick Klein and ABC News political contributors John Katko and Donna Brazile take a look at where things stand politically as we start the new year.

ABC News’ Alex Presha and Rick Klein talk about where the 2024 race stands with less than two weeks until the Iowa caucuses.

Donald Trump is dominating the polls ahead of the Iowa caucuses, with a new 538 poll showing him more than 30 points ahead of his rivals.

Candidates are making their last-minute pitches to voters in the state as former president Donald Trump holds a commanding lead over his rivals in the polls.

U.S. presidential elections have been rocked in recent years by economic disaster, gaffes, secret video and a pandemic

With the Iowa caucus just two weeks away, Florida Gov. Ron DeSantis is focusing all his time in the state.

Ron DeSantis is underscoring how much Iowa means to him, campaigning there into the waning hours of 2023

Over the past three years, the world’s oldest democracy has been tested in ways not seen in decades

As 2024 nears, voters are talking about issues that will matter the most in the new year.

Activists who engage with voters of color are finding lackluster enthusiasm after disappointments on some issues such as voting rights and student loan forgiveness during President Joe Biden's term

Nikki Haley said this week she would pardon Trump even if he's convicted, while Ron DeSantis avoided a straight answer on the topic.

Legal contributor Asha Rangappa talks about Maine becoming the second state to leave former President Trump off the 2024 GOP primary ballot.

Trump was included on the slate of certified Republican candidates released by the secretary of state’s office Thursday evening.

Maine Secretary of State Shenna Bellows has decided Donald Trump is ineligible to appear on the state’s 2024 Republican primary ballot.

Republican presidential candidate Nikki Haley addressed the backlash to her comments about the cause of the American Civil War. She had not cited slavery as a cause.

Maine's secretary of state disqualified the former president.

ABC News spoke with experts about the influence religion has in the GOP primary.

FiveThirtyEight’s Galen Druke talks about the criticism that former South Carolina Gov. Nikki Haley is getting for her response about the Civil War and what it could mean for the 2024 race.

The list of security challenges keeps growing for election officials preparing for the 2024 presidential election

Entrepreneur Vivek Ramaswamy's presidential campaign is halting its television advertising just weeks out from Iowa's caucuses on Jan. 15.

The Michigan Supreme Court has rejected an appeal seeking to keep former President Trump off the state's 2024 ballot.

Nikki Haley is betting her 2024 candidacy on winning South Carolina

Denver police are increasing security for the Colorado Supreme Court after last week's ruling that Donald Trump should be disqualified from running for president.

Independent candidates rarely succeed in U.S. politics, if they can make the ballot at all