As President Donald Trump continues to dominate American politics, a new poll suggests the battle over who could eventually carry the America First movement into the future is becoming far more competitive than many Republicans expected.
For months, Vice President JD Vance appeared to be the clear favorite to inherit Trump’s political coalition. However, a surprising surge by Secretary of State Marco Rubio is reshaping the conversation and creating what could become one of the most important Republican rivalries heading into the 2028 election cycle.
Rubio’s Rise Shakes Up the Republican Field
A newly released Emerson College poll shows Vance leading the Republican field with 36% support among likely GOP primary voters.
But Rubio is now right on his heels at 35%.
The result marks a dramatic shift from earlier polling, where Vance held a commanding advantage and Rubio trailed far behind. Since February, Rubio’s support has skyrocketed, signaling growing enthusiasm among Republican voters looking toward the party’s future.
Political analysts say the numbers suggest many conservatives are beginning to view Rubio as a serious contender for national leadership after Trump’s presidency.
Older Conservatives Moving Toward Rubio
One of the most striking findings from the survey involves Republican voters over the age of 50.
Among that key voting bloc, Rubio leads Vance by six percentage points, receiving 41% support compared to 35% for the vice president.
Meanwhile, Vance remains strongest among younger Republicans, where he continues to maintain a solid lead.
The divide highlights an emerging debate within the Republican Party about who is best positioned to preserve and expand Trump’s America First agenda in the years ahead.
Trump’s Influence Still Looms Large
Despite the growing competition, one thing remains clear: President Trump continues to be the most influential figure in Republican politics.
In recent months, Trump has openly discussed the future of the movement at rallies and public appearances, sometimes asking supporters whether they prefer Vance or Rubio as the next leader of the MAGA coalition.
The president has spoken favorably about both men and has even described the possibility of a future Vance-Rubio partnership as a “dream team.”
For many Republican voters, Trump’s eventual endorsement could prove decisive whenever the race to succeed him officially begins.
Other Republican Contenders Struggle to Gain Traction
The poll found Florida Governor Ron DeSantis and former South Carolina Governor Nikki Haley tied with 5% support each.
Meanwhile, roughly 15% of Republican voters remain undecided.
That large undecided bloc suggests the race is still far from settled and that future developments could dramatically reshape the field.
Democrats Face Their Own 2028 Questions
While Republicans are watching the Vance-Rubio contest develop, Democrats continue searching for a clear front-runner of their own.
Former Transportation Secretary Pete Buttigieg led the Democratic field with 18% support.
California Governor Gavin Newsom followed with 16%, a notable decline from previous polling.
Representative Alexandria Ocasio-Cortez placed third with 11%.
Pennsylvania Governor Josh Shapiro and former Vice President Kamala Harris were tied at 10%, while Kentucky Governor Andy Beshear rounded out the leading contenders with 9%.
Notably, nearly one in five Democratic voters remains undecided, highlighting ongoing uncertainty about the party’s future direction.
Why This Poll Matters
Although the 2028 election remains years away, the latest numbers offer an early glimpse into the future of both political parties.
For Republicans, the biggest story may not be who is leading today, but how quickly the race is changing.
Just months ago, JD Vance appeared to have a clear path to becoming the heir to Trump’s political movement. Now, Marco Rubio has emerged as a serious challenger, particularly among older conservative voters who remain one of the most reliable forces within the Republican Party.
The question many Republicans are now asking is simple: When the time comes to choose the next leader of the America First movement, will voters rally behind Vance, Rubio, or someone else entirely?
As the political landscape continues to evolve, that answer remains far from certain.