Voters have grown 45 net percentage points more likely to say Trump represents the majority viewpoint of Republicans in Washington.

In the latest Morning Consult/Politico poll — conducted Oct. 11-14 among 1,959 registered voters — 56 percent of respondents said Trump represents the majority viewpoint of Washington Republicans. That is 13 percentage points higher than a similar poll conducted in April , and up 23 points since August 2017 . All three surveys had 2-point margin of error.

Less than three weeks before the midterm elections, voters across the country are finding it harder than ever to distinguish President Donald Trump from other Republicans in Washington.

Together, it marks a net 45-point swing toward Trump as the face of the GOP in D.C., since Morning Consult first asked the question eight months into his first term as president. The trend polling shows Democrats, Republicans and independents all growing more likely to say Republicans in Washington are reflective of their party’s standard bearer.

“When you have so few Republicans on the Hill publicly challenging President Trump, it’s not a surprise that people start believing that he represents the broader view of the Republican Party,” Nathan Gonzales, a veteran political handicapper who edits and publishes the nonpartisan website Inside Elections, said in an email Tuesday.

Midterm elections tend to serve as a referendum on the party in power. In 18 of the past 20 midterm elections, the president’s party has lost an average of 33 House seats, according to the Brookings Institution. And the two midterm cycles that bucked that trend, in 1998 and 2002, featured presidents who were popular on Election Day. Historical data from Gallup shows Presidents George W. Bush and Bill Clinton with approval ratings in the mid-60s around the time voters cast their ballots during those years.

It’s a different story for Trump: In the latest online, national survey, 43 percent of voters approved of his job performance. And according to Morning Consult’s Midterm Wave Watcher, Trump’s net approval is 14 points underwater in the dozens of toss-up districts this cycle, and 3 points underwater in districts that lean Republican.

On the campaign trail, Democratic challengers have sought to capitalize on the president’s unpopularity. In one of the aforementioned toss-up districts — Virginia’s 10th — Democratic candidate Jennifer Wexton has used an ad to brand vulnerable Republican Rep. Barbara Comstock, “Barbara Trumpstock.”

Jesse Hunt, a spokesman for the National Republican Congressional Committee, said Tuesday that Republican candidates “are running localized races, talking about issues that are important to their districts.”