U.S. President Donald Trump waits to welcome Turkish President Recep Tayyip Erdogan at the White House in Washington D.C., the United States, on May 16, 2017. (Xinhua/Yin Bogu)

WASHINGTON, May 16 (Xinhua) -- U.S. President Donald Trump is facing a deepening credibility crisis as a new poll released Tuesday finds nearly half of U.S. voters want him to be impeached.

Trump is not currently facing impeachment charges.

Forty-eight percent of respondents said they would support Trump's impeachment, while only 41 percent would oppose such charges, according to a new survey by Public Policy Polling.

The poll results went public following a slew of controversies, including his firing of FBI Director James Comey last week and media reports that he revealed highly classified intelligence to Russian officials in their meeting in Oval Office in the same week.

Meanwhile, the poll found 40 percent approve of the job Trump is doing, and 54 percent disapprove.

Still, 43 percent said Trump will end up serving his full four-year term in office while 45 percent said his presidency won't make it that long.

The poll finds that 77 percent of voters expect the president's spokespeople to tell the truth at all times. Only 14 percent expect otherwise.

So far in his presidency, Trump's approval ratings have been hovering in the high 30s and 40s. According to Gallup, Trump has the lowest approval of any new president since the surveys began in 1953.