WASHINGTON (Reuters) - Fewer than a third of Americans support Donald Trump’s tax-cut plan, according to a Reuters/Ipsos poll released on Tuesday, as the U.S. president went to Capitol Hill looking for Republican backing for his proposal to slash tax rates for individuals and companies.

People listen as U.S. President Donald Trump speaks about tax reform in Harrisburg, Pennsylvania, U.S., October 11, 2017. REUTERS/Joshua Roberts

As the 2018 midterm congressional election campaigns grow nearer, the poll found that more than two-thirds of registered voters said reducing the U.S. federal budget deficit is more important than cutting taxes for the wealthy or for corporations.

Trump’s plan would balloon the deficit and add to the $20 trillion national debt, according to critics and independent analysts, but Republicans say the tax cuts proposed in the plan would be offset by economic growth that would generate new tax revenue.

Among Republicans surveyed, 63 percent said deficit reduction should take priority over tax cuts for corporations, while 75 percent said deficit reduction should take priority over tax cuts for the wealthy.

Democrats oppose Trump’s plan, unveiled on Sept. 27, and say it is unfair to the poor and the working class.

The plan is still only a nine-page “framework.” It was drafted in secret by Trump administration and congressional leaders. Formal legislation is in development.

Congressional leaders and Trump are trying to lock in support for the plan from rank-and-file Republicans, who were uninvolved in the framework drafting process.

Trump, who has yet to score a major legislative win since taking office in January, wants his plan to become law before year’s end, a timeframe that some policy analysts doubt is realistic.

More than half of the adults surveyed in the poll agreed that “cutting taxes for the poor is more important than reducing the federal deficit,” with 68 percent of Democrats and 47 percent of Republicans in accord with that statement, the poll showed.

The Oct. 20-23 poll found that only 15 percent of registered voters said Republicans in Congress should prioritize tax reform over other issues. About a quarter of those polled, including 23 percent of Democrats and 30 percent of Republicans, agreed that Congress should continue working on a healthcare bill.

Of those adults who said they had heard of the “tax reform plan recently proposed by congressional Republicans,” just 28 percent said they support it, while 41 percent said they oppose it and another 31 percent said they do not know.

The poll found opinions on Trump’s plan were sharply divided along party lines, with 56 percent of Republicans and just 9 percent of Democrats supporting it.

Of those who had heard of the plan, 14 percent said it would cut their taxes, while 30 percent said it would increase their taxes. Another 35 percent said their taxes would not change and 20 percent said they did not know how it would impact them.

The Reuters/Ipsos poll was conducted online in English in all 50 states. It gathered responses from 1,862 people, including 1,079 people who said they were aware of the Republican tax plan. It has a credibility interval, a measure of accuracy, of 3 percentage points.