On his social media platform Truth Social, the president says the offer applies to both previous elections and the upcoming midterm elections in 2026.
"Anyone who reports voter fraud in previous elections or in the upcoming 2026 midterm elections will receive $1,000,000 upon the arrest and conviction of those behind the fraud," he writes on Truth Social on Monday.
One million dollars is equivalent to approximately 9.95 million Swedish kronor.
The midterm elections in the United States will be held on November 3 and will determine whether the president's party, the Republicans, retain control of Congress or whether power instead goes to the Democrats.