Hugo Chavez was a nationalist that was popularly and fairly elected multiple times until, eventually, the elections weren't actually fair anymore and the institutions of government were irreparably corrupt.
Nationalist movements aren't the only the way this can naturally occur, but it's perhaps the most common in the past two centuries.
By the way, I came across one of your HN comments in the past (https://news.ycombinator.com/item?id=18127353) and immediately was impressed by your thinking. Ever since, I look forward to seeing your comments on HN. If you are interested, I would be greatly interested in hearing more of your thoughts expressed in the aforementioned comment of yours. My email is njrc900[at]gmail[dot]com