New polling data suggests support for President Donald Trump grows after election, but still falls Source Next Big Generation title Poll: Trump’s approval ratings sink as the election draws closer, but it’s still a long way from his peak

New poll data suggests President Donald J. Trump’s popularity among Republicans and the nation’s middle class has plunged to its lowest point since the start of the election.

A survey released Thursday by YouGov, a public affairs firm, shows Mr. Trump has fallen to 45 percent approval among registered voters nationwide, down from a 61 percent approval rating in the previous survey conducted Feb. 2-3.

The survey was conducted by phone Feb. 7-9 among 2,923 registered voters, with a margin of error of plus or minus 3 percentage points.

Among all adults, approval of the job he’s doing as president has dropped from 65 percent in early February to 44 percent.

Mr. Trump is also down 4 points from the early-March survey.

The new poll also finds the public is far more pessimistic about the country than before the presidential election, with 50 percent saying they expect things to get worse and only 29 percent saying things will get better.

Among registered voters in each of the three most recent YouGov surveys, there has been a significant drop in support for the president among registered Republicans.

The latest poll found Trump’s disapproval among Republicans dropped from 67 percent in the first poll conducted in early March to 47 percent in this latest survey.

That’s a drop of 11 points, or 9 percentage points, in support.

Support for Mr. Obama has also fallen, from 55 percent to 44.

It has been down 6 points, to 54 percent, in each survey.

A similar pattern holds for independents, who have dropped from 57 percent to 36 percent, with support for Mr Trump remaining the same.

The shift in support has come in waves, with the first wave being the most positive and the second wave being most negative.

Overall, about 4 in 10 Americans have a favorable view of Mr. Bush, while more than 6 in 10 have a negative view.

More than 7 in 10 Democrats and independents hold a favorable opinion of Mr Trump, while he is viewed more negatively by most Americans.

Mr Trump’s unpopularity with voters is the lowest it’s been since early February.

He had a 54 percent disapproval rating among registered Democrats in the February survey.

In late February, he led his Republican rivals for the nomination by a wide margin, with 48 percent of voters saying they approve of his performance as president and 40 percent saying he doesn’t.

That number had been at 47 percent before the election, when Mr. Sanders was leading his Democratic rivals by double digits.

In early March, Mr. Cruz had a 57 percent approval rate among Republicans, while Mr. Carson had just 28 percent approval.

Mr. Rubio and Mr. Kasich were tied for second, at 21 percent each.

More:The new YouGov poll also found Mr. Johnson’s approval rating among Republicans had dropped to 33 percent, while that of Mr Ryan had risen to 44% in the latest survey, from 35 percent in March.

The poll was conducted Feb 2-4 among 2.5 million registered voters.

The margin of the error is plus or lower.