It would be disloyal for Pence and ex-Cabinet members to run against him.
The ex-president sent a clear message when he was considering a White House bid.
They are thought to be thinking of their own bids.
Donald Trump said it would be disloyal for his former Cabinet members to run against him in a Republican presidential primary in four years.
During a Fox News Radio interview, Trump boasted of his continued dominance among GOP voters by pointing to the strong primary leads that he continues to hold in most public polling.
It's thought that Trump will wait until after the November elections to make his intentions known. Former members of the Trump administration, including Vice President Mike Pence, have been mentioned as potential challengers.
"Many of them have said they wouldn't run if I ran, so we'll see if that turns out to be true," Trump said of the people he's considering running against. It would be disloyal if they did, but that's okay.
The polls show me leading by a wide margin. I lead by a lot. I will probably make a decision in the not-too- distant future.
The United States is a nation in decline, according to Trump.
Since leaving the White House, the former president has been barnstorming the country and campaigning for GOP candidates in the upcoming elections.
While Trump is a favorite to win the nomination if he chooses to run, other Republicans are looking to steer the party in a Trump-centered direction.
They are thought to be thinking about campaigns in the future. Texas Gov. Greg Abbott, who was not in the former president's cabinet, is also seen as a serious contender.
Maryland Gov. Larry Hogan, who has been critical of Trump, is also thought to be a potential opponent. After two terms in office, he will leave office.
While stumping for other Republicans, he praised the conservative agenda that he pursued with Trump but also sought to craft his own identity.
The former president has continued to make claims that the election was "stolen" despite no evidence of mass fraud and multiple unsuccessful attempts to litigate the results in court.
Business Insider has an article on it.