"First of all, it [the primary season] was rigged, and I'm afraid the election is going to be rigged. I have to be honest. Because I think my side was rigged. If I didn't win by massive landslides — I mean, think of what we won in New York, Indiana, California 78 percent," he said. "That's with other people in the race, but think of it."
This isn't the first time Trump has made such a suggestion. Last week during a rally in Iowa, Trump appeared to make the same suggestion.
Trump has long asserted that the primary election process wasn't fair to him, vigorously condemning it as "rigged." He alleged that party officials didn't want him to become the nominee and that other candidates undermined the system.
While Trump has predicted victory in November, he also suggested that "lazy" voters could be blamed if he loses.
"Just in case we don't make it because you people get lazy and don't vote, OK? Colorado is very important," he said in Colorado Springs. "Very important."