Conservatives are holding one of their largest annual gatherings at a politically challenging moment for President Donald Trump, amid divisions on the right over the U.S. military action in Iran.

While Trump maintains broad support among conservatives, the war in Iran is more than a wrinkle for those drawn to his "America First" campaign pledge against getting involved in foreign conflicts. A new AP-NORC poll shows about 59% of Americans think the military action in Iran is excessive.

The debate will be a subtext — and likely flare publicly — as thousands gather at the Conservative Political Action Conference that begins Wednesday outside Dallas.

The event also comes a day after a Democrat flipped the Florida state legislative seat that's home to Trump's Mar-a-Lago estate.

The gathering will be a contrast to the celebratory meeting one year ago when Trump, newly returned to office, vowed to "forge a new and lasting political majority" and Elon Musk wielded a chain saw to symbolize how the Republican administration was slashing the government workforce and red tape.

This year, neither Trump nor Vice President JD Vance has been publicly announced as speaking to the gathering. But among those who are slated to speak are big names in the MAGA movement who have voiced conflicting views on the Iran war.

"This is obviously going to be a hot topic," said John Gizzi, a CPAC veteran and columnist for Newsmax, who noted the possibility of greater U.S. involvement over an uncertain length of time.

Among the featured speakers scheduled at the four-day event is longtime Trump ally Steve Bannon. Bannon said during his "War Room" podcast this month that should the war become "a hard slog," it could cost the GOP conservative voters ahead of the midterms.

"We are going to bleed support," Bannon said.

Sen. Ted Cruz of Texas, who supports the war, also is on the agenda at the Gaylord Texan Resort and Convention Center.

"I think President Trump was exactly right to act to protect Americans," Cruz said last week in a CBS News interview.

A reminder of the disagreement among some conservatives about the U.S. military alliance with Israel against Iran is the scheduled speaking slot of former Rep. Matt Gaetz of Florida.

Gaetz, host of a show on One America News Network, has said the U.S. has been too cozy with Israel as popular conservative personalities such as Tucker Carlson have challenged conservatives' longtime bond with the country, prompting criticism from GOP groups, including pro-Israel Republicans, of antisemitism.

Hundreds of attendees from around the country and overseas formed winding lines through the corridor outside the event hall at the Gaylord Texan Resort and Convention Center Wednesday. The main program of more than 80 speakers was not scheduled to begin until Thursday.

Bright red outfits, "Trump 2028" caps, and star-spangled jackets were part of the dress code. Some women dressed in traditional Iranian attire carried signs expressing support for the war in Iran.

Others scheduled to speak include Trump border czar Tom Homan and former Republican National Committee Chairman Michael Whatley, who is running for the U.S. Senate in North Carolina.

A year after Trump presided over the group's jubilant conference upon his return to office, he is in a much different place.

At war while worries about jobs and household costs linger, his approval ratings have declined in recent polling.

His signature domestic policy, aimed at tightening voting rules ahead of November's midterm elections, has stalled in a Congress his party controls, while the House Republican majority could face challenges and the party's hold on the Senate appears less secure than a year ago, according to recent political assessments.

Despite the dividing lines, Trump enjoys enduring approval from his party's right flank. Eighty-six percent of conservatives said they approved of the president's job performance in a February AP-NORC poll.

And while Trump's supporters remain devoted, some within the most conservative circles say division over Iran could signal trouble for Republicans in November.

Texas state Rep. Steve Toth, who plans to attend CPAC, suggested that Trump's support remains robust among conservatives but that Republican messaging on the war could be stronger.

"From MAGA people, for the most part, I don't hear frustration with the president," said Toth, who beat incumbent Republican Rep. Dan Crenshaw in Texas' March 3 primary. "I don't know that we're doing a great job at communicating the full ramifications."

Another reminder of the contrast with last year is Texas' unresolved Senate primary, a particular political headache for Trump.

Texas Attorney Gen. Ken Paxton, who is challenging four-term GOP Sen. John Cornyn, not only is attending the event but also has one of the event's premier speaking roles, the Ronald Reagan Dinner on Friday evening. Cornyn is not attending the Texas conference.

Trump said three weeks ago he would soon endorse one of them after Paxton finished narrowly behind Cornyn in the March 3 primary, though neither received a majority to avoid a May 26 runoff.

Trump implored whoever didn't get the endorsement to drop out, writing in a social media post that the bitter contest "cannot, for the good of the Party, and our Country, itself, be allowed to go on any longer."

The deadline for candidates to remove their names from the May 26 runoff ballot passed last week, as Paxton and Cornyn were launching stepped-up attack ads targeting one another.