A recent poll has found that Americans are split almost evenly on whether professional sports leagues should mandate athletes to stand for the national anthem.

The HBO Real Sports/Marist poll, which was conducted by the Marist College Institute for Public Opinion from Oct. 15-17, found that 51 percent of respondents were against a mandatory rule that would require athletes to stand during the anthem, while 47 percent were in favor of that rule. The poll received some funding from HBO’s “Real Sports,” according to an NBC Sports report.

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The survey had a margin of error of plus or minus 3.7 percentage points. Results were drawn from 1,093 adult respondents, 712 of whom said they were football fans.

The results are different from those of the same poll conducted last year. In September 2016, prior to a divisive presidential election, 52 percent of respondents said that leagues should require players to stand, while 43 percent opposed that rule.

Then-49ers quarterback Colin Kaepernick began protesting by kneeling during the national anthem in 2016 and the issue has seen an increase in attention this NFL season.

This season, President Donald Trump has criticized the NFL for not implementing a rule that requires all athletes to stand during the anthem. He said on Twitter that any player who “disrespects the flag and country” should be “fired or suspended.”

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The HBO Real Sports/Marist poll found that 68 percent of respondents said that the president was wrong to call for these players to be fired.