Ahead of a historic House vote that’s expected to impeach President Donald Trump, a new CNBC All-America Economic Survey finds the nation evenly divided on the question, but about 1 in 5 Americans are either open to changing their mind or are unsure.

The poll of 800 Americans nationwide found that 45% disapprove of Congress impeaching Trump and 44% approve, little changed from September. Of those who have an opinion, 10% say they are open to changing their minds and 11% are unsure.

The poll, conducted Dec. 10-13, has a margin of error of plus or minus 3.5 percentage points.

The poll shows a massive partisan split, with 78% Democratic support for impeachment and 83% Republican opposition. Independents disapprove of impeachment by 46% to 41%.

Big economic approval

Trump’s economic approval numbers surged back to their highest levels in a year.

The new numbers reverse a sharp decline from September’s poll, which coincided with the House’s decision to launch impeachment proceedings. The president’s overall approval numbers also rebounded but remain deeply negative.

The positive change in both approval ratings suggests the initial announcement of impeachment had a sharply negative effect on Americans’ attitudes about the president, but numbers have now rebounded much closer to the average levels for the Trump presidency.

The survey shows 49% approving of the president’s handling of the economy, up from 42% in September. Disapproval on the economy dropped to 40% from 50%. As a result, Trump’s net economic approval rating swung from minus 8% in September (the first negative of his presidency) to plus 9%, a massive 17-point move for the series.

The president’s overall approval rating also improved, but not nearly as much as on the economy. The survey finds 49% of Americans disapproving of the job Trump is doing and 40% approving. The minus 9% net approval number, however, is a strong improvement from minus 16% in the September survey.

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