Since November, President Trump has claimed, without evidence and against the findings of political scientists, that millions of non-citizens voted illegally in the 2016 election—which he blames for costing him the popular vote against Democratic nominee Hillary Clinton.

Even though Trump’s own lawyers dismissed fraud claims in a legal filing, the President remains convinced: On Jan. 25, just five days after his inauguration, he announced an investigation into the matter.

After his repeated accusations, 25% of voters now think the unfounded claims are true, too.

A new Morning Consult/Politico survey has found that one in four voters believe there was voter fraud in the election, while 44% do not. To obtain those results, pollsters surveyed 1,991 registered voters from Jan. 26 through Jan. 28. The poll has a margin of error of plus or minus 2 percentage points, according to Politico.

Among Democrats polled, only 16% believed the voter fraud allegations, compared to the 36% of Republicans surveyed who did.

Interestingly, more of those who were surveyed believed that Trump, not former Democratic nominee Clinton, was helped by voter fraud. According to the poll, 35% of voters thought that Trump benefited most from the alleged fraud, compared to 30% who believed Clinton was helped most.

Get our Politics Newsletter. The headlines out of Washington never seem to slow. Subscribe to The D.C. Brief to make sense of what matters most. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Contact us at letters@time.com.