U.S. President Donald Trump listens during a working lunch with governors on workforce freedom and mobility in the Cabinet Room of the White House in Washington, D.C., U.S., on June 13, 2019.

WASHINGTON — President Donald Trump's re-election campaign is cutting ties with some of its own pollsters after leaked internal polling showed the president trailing former Vice President Joe Biden in critical 2020 battleground states.

The move comes after NBC News obtained new details from a March internal poll that found Trump trailing Biden in 11 key states.

Portions of the campaign's expansive March polling trickled out in recent days in other news reports.

But a person familiar with the inner workings of the Trump campaign shared more details of the data with NBC News, showing the president trailing across swing states seen as essential to his path to re-election and in Democratic-leaning states where Republicans have looked to gain traction. The polls also show Trump underperforming in reliably red states that haven't been competitive for decades in presidential elections.

A separate person close to the Trump re-election team told NBC News Saturday that the campaign will be cutting ties with some of its pollsters in response to the information leaks, although did not elaborate as to which pollsters would be let go.

The internal polling paints a picture of an incumbent president with serious ground to gain across the country as his re-election campaign kicks into higher gear.

While the campaign tested other Democratic presidential candidates against Trump, Biden polled the best of the group, according the source.