ML-Implode News - What 46 Populist Leaders Did to Democracy

Populists aren't just more likely to win reelection once or twice; they are also much more likely to remain in power for well over a decade. Six years after they are first elected, populist leaders are twice as likely as non-populist leaders to still be in power; twelve years after they are first elected, they are more than five times as likely.
... only 17 percent of populists stepped down after they lost free and fair elections. Another 17 percent vacated high office after they reached their term limits. But 23 percent left office under more dramatic circumstances--they were impeached or forced to resign. Another 30 percent of all populist leaders in our database remain in power to this day. This is partially a function of the recent rise of populism: Thirty-six percent of those populist rulers who still remain in power were elected over the past five years. But even more of them have been in office long enough to raise serious concerns: About half have led their country for at least nine years.
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In many countries, populists rewrote the rules of the game to permanently tilt the electoral playing field in their favor. Indeed, an astounding 50 percent of populists either rewrote or amended their country's constitution when they gained power, frequently with the aim of eliminating presidential term limits and reducing checks and balances on executive power.
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Since 1990, 13 right-wing populist governments have been elected; of these, five brought about significant democratic backsliding. Over the same time period, 15 left-wing populist governments were elected; of these, the same number, five, brought about significant democratic backsliding. This suggests that left-wing populists are not likely to be a cure for right-wing populism; they are, on the contrary, likely to accelerate the speed with which democracy burns out.''

Relevant:

What 46 Populist Leaders Did to Democracy - The Atlantic