Two prominent GOP lawmakers have expressed doubts about whether or not President Donald Trump will seek a second term.
On Oct. 29, GOP Sen. Rand Paul of Kentucky stated that he was unsure if Trump would be the Republican nominee in 2020.
"I think no one can stop primaries from happening and there could well be a primary that happens," Paul told MSNBC.
"Before you even get to that, you need to know, is President Trump running for re-election?" Paul added. "I think you won't know that until you get into sort of -- second, third year of his presidency."
Paul's comments were similar to the same misgivings expressed by GOP Gov. Chris Christie of New Jersey.
On Oct. 27, Christie stated during an interview that the potential for another Trump campaign was an open question.
"If he runs again I would support him, yes, but I'm not so sure what will happen," Christie told NBC's "Today."
The outgoing New Jersey governor noted that Trump was not a lifelong politician and that it was possible that he would not want to seek another four years in the Oval Office.
"Four years is a long time, and especially for someone who has not spent a lifetime in politics, so I think those years affect him differently," Christie continued. "So I'm sure the president will make whatever decision is best for him and his family and the country."
While Christie and Paul expressed skepticism over Trump's interest in a second term, the president has already been raising money for a 2020 re-election campaign.
By Oct. 15, Trump's re-election campaign had already garnered $36 million since it began fundraising in January, Reuters reports.
It is rare for an incumbent president to opt out of a re-election bid. The only previous presidents to bow out from campaigning after one term in office were James Polk in 1844, Calvin Coolidge in 1927 and Lyndon B. Johnson in 1968, according to Newsweek.
On Oct. 30, the Gallup daily tracking poll found that only 34 percent of Americans approved of Trump's job performance while 62 percent disapproved. The survey results marked the president's lowest job approval since he assumed office.
GOP Gov. John Kasich of Ohio is widely expected to mount a primary challenge against Trump in 2020. On Oct. 29, Kasich signaled during an interview that he was eyeing a presidential campaign without explicitly stating his intentions.
"There has to be a fundamental change, in my opinion, with all of us," Kasich told New York magazine. "I'm willing to be part of that. I want my voice to be out there. I want it very, very much."