• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
LeadershipDonald Trump

Trump just pledged allegiance to the GOP; here’s why the GOP should be worried

By
Tory Newmyer
Tory Newmyer
Down Arrow Button Icon
By
Tory Newmyer
Tory Newmyer
Down Arrow Button Icon
September 3, 2015, 5:01 PM ET
Donald Trump
Republican presidential candidate Donald Trump holds a signed pledge during a news conference in Trump Tower, Thursday, Sept. 3, 2015 in New York. Trump ruled out the prospect of a third-party White House bid and vowed to support the Republican Party's nominee, whoever it may be. (AP Photo/Mark Lennihan)Photograph by Mark Lennihan — AP

Donald Trump just made a big concession to the establishment that he’s spent his campaign shadowboxing.

The undisputed Republican frontrunner on Tuesday privately signed and then publicly presented a “loyalty pledge” that commits him to backing the GOP presidential nominee, even if that’s somebody else. More significantly, the contract binds Trump from launching an independent bid should his pursuit of the Republican nod fall short.

“I have signed the pledge,” Trump told a capacity crowd of media and onlookers at his Trump Tower in midtown Manhattan. He then held up the signed document and added he “will be totally pledging my allegiance to the Republican party and the conservative principles for which it stands.” Trump appeared before the cameras after concluding a closed-door tete-a-tete with Reince Preibus, the Republican National Committee chairman, who’d traveled to New York for the purpose.

The decision marks an about-face for Trump, who opened the first Republican presidential debate last month by refusing an invitation from the Fox News moderators to rule out a third-party run. “I’m talking about a lot of leverage,” he said at the time, meaning that the threat he could bolt would keep Republican party bosses in hock to him rather than the other way around.

Explaining what’s changed in less than a month since, Trump on Tuesday pointed to his position in the polls. The latest, a Monmouth University survey released Thursday, showed him reaching a record-high 30% support nationally, a 7% increase over his position in the same poll when it was conducted before the Republican debate.

Trump said he hadn’t redeemed his “leverage” for anything in return for his pledge —except a guarantee from Preibus that the official party apparatus will continue to treat him fairly. Arguably, Trump didn’t sacrifice much by signing, since mounting an independent run would prove an expensive and organizationally vexing challenge at this point. And it’s hardly clear what power the RNC has to enforce the document if Trump decided he wanted to anyway.

On the flip side, by affirming his loyalty, Trump inoculates himself — to a degree — from the attack that he’s nothing more than an opportunist using the party to promote himself. That critique has been voiced most loudly by former Florida Gov. Jeb Bush, and the former frontrunner showed Thursday afternoon he won’t be abandoning it. He tweeted his own version of the pledge, making clear his voting record has been ruby-red since 1972, an thinly-veiled shot at Trump’s liberal past.

.@realDonaldTrump pic.twitter.com/RbagyBXspr

— Jeb Bush (@JebBush) September 3, 2015

But partisan fealty is not the same thing as ideological conformity — a fact that Trump’s improbably enduring lead is demonstrating in realtime. That Trump has now at least nominally removed any doubt about his Republican allegiance will do nothing to quell a much more consequential debate his rise has touched off within the party about what it means to be a conservative.

Before Trump stepped on the scene, there was a rough consensus among party elites that the appellation demanded a commitment to lower taxes, free trade, trimmed entitlement benefits, and a path to citizenship for immigrants already within our borders. Trump is shredding the consensus, rejecting each of its pillars and nevertheless (or, perhaps, as a result) building wide, deep support among the party’s base. For that reason, Trump’s move today could be just as menacing to the party’s establishment — tantamount to the scene in the horror movie when the intruder locks himself inside the house. His popularity will continue to force the field to reckon with his positions. And when his rivals call out his conservative apostasies, Trump can now borrow a line from Ohio Gov. John Kasich, a fellow contender for the nomination who’s at times likewise proved idiosyncratic in his approach to policy. As Kasich is fond of saying, “The Republican party is my vehicle and not my master.”

About the Author
By Tory Newmyer
See full bioRight Arrow Button Icon

Latest in Leadership

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Leadership

Anthropic’s research shows that AI can already do a huge portion of many jobs; its top economist talks about how that could shape the future of work
MagazineAutomation
Anthropic’s research shows that AI can already do a huge portion of many jobs; its top economist talks about how that could shape the future of work
By Matthew Heimer and Nicolas RappApril 7, 2026
1 hour ago
AP
AIMedia
Associated Press starts offering buyouts to newspaper journalists amid wider AI transformation
By David Bauder and The Associated PressApril 6, 2026
11 hours ago
Sam Altman says AI superintelligence is so big that we need a ‘New Deal.’ Critics say OpenAI’s policy ideas are a cover for ‘regulatory nihilism’
AIOpenAI
Sam Altman says AI superintelligence is so big that we need a ‘New Deal.’ Critics say OpenAI’s policy ideas are a cover for ‘regulatory nihilism’
By Sharon GoldmanApril 6, 2026
11 hours ago
worker
Future of Workdisruption
Goldman just looked at 40 years of data on the ‘scarring’ effects of technological disruption and finds Gen Z isn’t the most at risk
By Nick LichtenbergApril 6, 2026
12 hours ago
H&R Block CEO shares the deeply human fear that separates middle managers from those destined for the C-suite
C-SuiteNext to Lead
H&R Block CEO shares the deeply human fear that separates middle managers from those destined for the C-suite
By Ruth UmohApril 6, 2026
13 hours ago
omar
Commentarydisruption
Pearson CEO: the AI job apocalypse is a Silicon Valley story. The data tells a different one
By Omar AbboshApril 6, 2026
15 hours ago

Most Popular

The U.S. military set up an improvised airfield deep inside Iran to rescue the F-15 airman. Marines just practiced building one in the desert
Politics
The U.S. military set up an improvised airfield deep inside Iran to rescue the F-15 airman. Marines just practiced building one in the desert
By Fortune EditorsApril 5, 2026
2 days ago
During the rescue of the F-15 airman in Iran, the U.S. military blew up two of its own transport planes that had to be left behind
Politics
During the rescue of the F-15 airman in Iran, the U.S. military blew up two of its own transport planes that had to be left behind
By Fortune EditorsApril 5, 2026
2 days ago
Millions of Americans paid billions in tariffs later ruled illegal — and they won't see a dime back
Commentary
Millions of Americans paid billions in tariffs later ruled illegal — and they won't see a dime back
By Fortune EditorsApril 6, 2026
19 hours ago
A CIA deception campaign in Iran helped the spy agency uncover the location of the downed F-15 airman, who was hiding in a mountain crevice
Politics
A CIA deception campaign in Iran helped the spy agency uncover the location of the downed F-15 airman, who was hiding in a mountain crevice
By Fortune EditorsApril 5, 2026
1 day ago
Sam Altman says AI superintelligence is so big that we need a ‘New Deal.’ Critics say OpenAI’s policy ideas are a cover for ‘regulatory nihilism’
AI
Sam Altman says AI superintelligence is so big that we need a ‘New Deal.’ Critics say OpenAI’s policy ideas are a cover for ‘regulatory nihilism’
By Fortune EditorsApril 6, 2026
11 hours ago
Netflix cofounder says he stopped work at 5 p.m. every Tuesday for 30 years to stay 'sane,' no matter the crisis: 'Nothing got in the way of that'
Success
Netflix cofounder says he stopped work at 5 p.m. every Tuesday for 30 years to stay 'sane,' no matter the crisis: 'Nothing got in the way of that'
By Fortune EditorsApril 5, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.