Vice President J.D. Vance currently leads the race for the 2028 Republican presidential nomination with 45% support among registered GOP voters, according to a survey from the Harvard Center for American Studies (CAPS). However, Donald Trump Jr. has emerged as a significant challenger, surging to 21% in the same poll and effectively tying with Secretary of State Marco Rubio for second place.
Why is Donald Trump Jr. Gaining Momentum?
Donald Trump Jr. is capitalizing on a solidified base of “America First” voters, marking a sharp rise in his political viability. While he was previously excluded from many major polling lists, recent data from the Harvard CAPS survey shows he immediately commands high support when included. This trend is mirrored in Financial Times monthly surveys of independent voters, where he has maintained steady double-digit interest. According to his own statements at a meeting in Doha, Qatar, as reported by CBS News, the younger Trump has moved from dismissing rumors of a run to suggesting the “call is there,” signaling a potential formal entry into the 2028 cycle.
Donald Trump Jr. has explicitly stated that he views the Republican Party as the “MAGA party,” positioning himself as a successor to his father’s political movement rather than a traditional party establishment figure.
How Does the Field Compare to J.D. Vance?
J.D. Vance maintains a clear lead, having held the top spot in nearly all of the 50 polls tracked by The New York Times since the most recent presidential election. Despite a three-percentage-point dip in the latest CAPS data, his position remains robust. The primary shift in the landscape is the pressure on Secretary of State Marco Rubio. Once the clear runner-up and the only candidate to occasionally unseat Vance in individual polls, Rubio is now locked in a statistical dead heat with Trump Jr. at 21%.
| Candidate | Support (%) |
|---|---|
| J.D. Vance | 45% |
| Donald Trump Jr. | 21% |
| Marco Rubio | 21% |
| Tucker Carlson | 5% |
What Happens to the Remaining Republican Field?
The field has narrowed significantly since the removal of Florida Governor Ron DeSantis from major polling lists in May. The redistribution of those voters has likely contributed to the heightened competition between the current top three candidates. With Tucker Carlson polling at 5% and a small margin of voters opting for “someone else,” the race has effectively consolidated around the influence of the former Trump administration. Analysts note that the absence of a large field of candidates has forced voters to choose between the continuity represented by Vance and the populist alternative proposed by the Trump family.
Watch for future polling that includes potential challengers outside of the immediate Trump-Vance-Rubio circle. Historical shifts often occur when “undecided” voters move toward newer, high-profile entrants.
Frequently Asked Questions
Who is currently leading the 2028 Republican primary polls?
J.D. Vance leads with 45% of the vote, according to the latest Harvard CAPS poll.
Is Donald Trump Jr. officially running for president?
No. While he has indicated that he is open to a future run and has acknowledged the “call” to enter politics, he has not made a formal declaration of candidacy for 2028.
Why is Marco Rubio under pressure?
Rubio is facing increased pressure because his polling numbers have stagnated, allowing Donald Trump Jr. to catch up to his 21% support level.
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