"Of course the elections will not be rigged," Obama said. "What does that mean?"
Earlier this week, Trump told a crowd in Ohio that he is "afraid the election's going to be rigged."
Speaking from the Pentagon after a meeting with his National Security Council, Obama explained that the federal government does not run the election process.
"If Mr. Trump is suggesting that there is a conspiracy theory that is being propagated across the country, including in places like Texas where typically it's not Democrats who are in charge of voting booths, that's ridiculous. That doesn't make any sense and I don't think anybody would take that seriously," Obama said.
The president said that this upcoming election "will be an election like every other election" and suggested that Trump "go out there and try to win the election."
Said Obama: "If Mr. Trump is up 10 or 15 points on election day and ends up losing, then maybe he can raise some questions."