President Donald Trump's re-election campaign has severed ties with some of its pollsters after the leak of months-old surveys showed him trailing former Vice President Joe Biden in key states, according to multiple reports.

The moves come ahead of the official launch of Trump's campaign at a Tuesday rally in the battleground state of Florida, and as an NBC-Wall Street Journal poll released Sunday showed that a majority of voters are "uncomfortable" with voting for Trump. Assessments of the economy have weakened in other surveys, and the public increasingly doubts the administration's immigration enforcement efforts.

NBC News first reported that the Trump pollsters were ousted following revelations that internal campaign polling from March showed Trump trailing Biden in traditionally Democratic-leaning states such as Pennsylvania that cemented the president's victory in 2016, as well as in swing states and some typically Republican strongholds such as Georgia.