Carson, a conservative who briefly led opinion polls among Republicans earlier in the campaign, said he did not "see a political path forward" after performing poorly in this week's Super Tuesday nominating contests. Instead, the Republicans said, he has chosen to make a speech about his political future on Friday at the Conservative Political Action Conference in Maryland, just outside of Washington. Despite poor showings in other primary and caucus states, Carson had stayed in the race and participated in debates until now. Trump, rising in the polls, took to mocking Carson, particularly over a story from the surgeon's memoir about Carson attempting to stab a friend - the knife broke in a half after hitting a large belt buckle. In addition, he suffered from voters' desire for a candidate projecting strength at a time of anxiety over terrorism.
The strategists said Carson is eyeing a public policy role in the future and may transition his campaign to that.
According to analysts, the politician never provided strong political arguments for his presidential campaign.
Born into poverty and raised by a single mother with a third-grade education, Mr. Carson remade himself from a wayward teenager into a scholar, winning admission to Yale and medical school.
Carson, a renowned neurosurgeon, first burst onto the political scene in 2013 when he sharply criticized President Obama's policies at the National Prayer Breakfast as the president sat just a few feet away.
Days before he made that statement, the GOP candidate attended the National Religious Broadcasters convention, where he told radio host Eric Metaxas that a President Trump "may not be the total disaster that we anticipate if he's willing to get the right kind of people to help".
He also said to "patriots" who supported him as a candidate, that he still remains committed to "save America" for future generations.
"Gratefully, my campaign decisions are not constrained by finances; rather by what is in the best interests of the American people".