Nearly a quarter (23 percent) of Americans surveyed now think the name should be changed, up from 8 percent in 1992 and up 9 percentage points in the past year alone.
The poll of 1,019 Americans, conducted on landlines and cellphones between Aug. 20 and Aug. 24, found that 71 percent favor keeping the nickname -- but that's down from 89 percent when the question was first asked 22 years ago. It also found that 68 percent of people responding think the nickname is not disrespectful of Native Americans, compared to just 9 percent who say it is "a lot" disrespectful. (Nineteen percent say it shows "some" disrespect.)
A total of 54 percent of respondents think the name is unlikely to be changed, compared to 42 percent who think it will. (The rest had no opinion.)
Calls to change the team's nickname have increased recently.
In June, the United States Patent and Trademark Office canceled the team's trademarks in a 2-1 ruling on the basis that they are "disparaging to Native Americans." The team has appealed the ruling and has said it is confident it will be overturned.
Several politicians have urged NFL commissioner Roger Goodell to force team owner Dan Snyder to change the name, including Attorney General Eric Holder, Sen. Harry Reid and former secretary of State Hillary Rodham Clinton. President Barack Obama said last year that if he owned the Redskins, "I'd think about changing [the name]."
Last month, Maryland Gov. Martin O'Malley said on his Facebook page that it is "probably time" for the Redskins to change the nickname. The team plays at FedEx Field in Landover, Maryland.
A nonscientific survey by ESPN's NFL Nation revealed that 58 percent (167) of 286 players questioned say the Redskins should not change their name, but 42 percent (119) said they should. Of 51 Redskins players polled in a separate survey, 26 said the team should keep the name, one said it should be changed, and 24 didn't want to answer.
The polling conducted for "Outside the Lines" showed no difference in attitude between men and women, or whites and non-whites.
Politically, however, 89 percent of Republicans and 88 percent of people who consider themselves conservative say the team should keep its name, compared to just 58 percent for Democrats and 53 percent for liberals, according to the poll. In terms of political leanings, 83 percent of Republicans see no disrespect in the Redskins name. That drops to 68 percent of independents and 57 percent of Democrats.
"Back in 1992, when about nine in 10 Americans opposed changing the team's name, opinion was basically uniform across groups," according to Langer Research. "The increase since then in support for a change has occurred chiefly among Democrats, younger adults, those living in the Northeast and West, and people with higher incomes and more education."