• 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
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
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • 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
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 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.


Latest in Leadership

AIRecruiting
To ease recruiters’ fears of being replaced by AI, Zillow experimented with ‘prompt-a-thons.’ Now the real estate giant has 6 new recruitment tools
By Paige McGlauflin and HR BrewJanuary 6, 2026
7 hours ago
lurie
North AmericaSan Francisco
‘We took our business community for granted,’ San Francisco’s new mayor admits to city’s failings, but vows not to move fast and break things
By Nick LichtenbergJanuary 6, 2026
7 hours ago
jon hamm
C-SuiteMarketing
When brands play hard to get: why you’re drawn to products that neg you
By Jaclyn L. Tanenbaum, Karen Anne Wallach and The ConversationJanuary 6, 2026
9 hours ago
RetailLuxury
How a real estate scion’s risky dealmaking pushed Saks Global to the brink
By Phil WahbaJanuary 6, 2026
10 hours ago
Databricks CEO Ali Ghodsi speaking on stage at a Fortune tech conference.
AIEye on AI
Want AI agents to work better? Improve the way they retrieve information, Databricks says
By Jeremy KahnJanuary 6, 2026
11 hours ago
Future of WorkEducation
‘Employers are increasingly turning to degree and GPA’ in hiring: Recruiters retreat from ‘talent is everywhere,’ double down on top colleges
By Jake AngeloJanuary 6, 2026
11 hours ago

Most Popular

placeholder alt text
Personal Finance
Janet Yellen warns the $38 trillion national debt is testing a red line economists have feared for decades
By Eva RoytburgJanuary 5, 2026
1 day ago
placeholder alt text
AI
Experienced software developers assumed AI would save them a chunk of time. But in one experiment, their tasks took 20% longer
By Sasha RogelbergJanuary 5, 2026
2 days ago
placeholder alt text
Success
Blackstone exec says elite Ivy League degrees aren’t good enough—new analysts need to 'work harder' and be nice 
By Ashley LutzJanuary 5, 2026
1 day ago
placeholder alt text
Personal Finance
Current price of silver as of Monday, January 5, 2026
By Joseph HostetlerJanuary 5, 2026
2 days ago
placeholder alt text
Personal Finance
Current price of gold as of January 5, 2025
By Danny BakstJanuary 5, 2026
2 days ago
placeholder alt text
Future of Work
Bank of America CEO says he hired 2,000 recent Gen Z grads from 200,000 applications, and many are scared about the future
By Ashley LutzJanuary 3, 2026
4 days ago