Trump has stated in October of 2019 that Joe Biden was “only a good vice president because he understood how to kiss Barack Obama’s ass”, and this is one of many examples of how Trump has disregarded democratic norms and is adding to democratic erosion in this nation. Recently, Trump fired Gordon D. Sondland, the ambassador to the European Union, who testified there was a quid pro quo exchange with Ukraine in the impeachment hearings. This is a prime example of democratic erosion within political institutions. Looking further into this issue, this situation reveals itself to compromise the idea of democracy, and Trump can even be considered an authoritarian politician.
To fully understand the situation, people need to understand why Trump was impeached, which is the first of many reasons why he can be considered undemocratic. Trump was accused of withholding 400 million dollars of military aid from Ukraine in order to pressure Ukraine into digging up information on Joe Biden and his son, even though this money had already been allocated to Ukraine by Congress. Joe Biden is one of the Democratic Canidates for the 2020 election who could pose as a large threat to Trump’s reelection. 
The center of this issue is the fact that Trump fired Gordon D. Sondland and twin brothers Lieutenant Colonel Alexander S. Vindman and Lieutenant Colonel Yevgeny Vindman very shortly after the impeachment trials. Sondland and Alexander Vindman were both witnesses who spoke out against Trump in the trial. Trump defended his decision to fire Alexander Vindman in a tweet saying that Alexander Vindman was “insubordinate” and “given bad reviews by his superior”. Trump, however, gave no reason for firing his twin brother or Sondland. 
Presidentialism is a form of government in which the head of the government leads an executive branch that is seperate from the legislative branch. Lust and Waldner discuss the idea of Super-Presidentialism, which states that power seeking presidents unconstrained by powerful institutions or competing centers of power initiate backsliding, or the general decline of democracy. Trump can be included in this narrative because of the way he fired the staff that disagreed with him during the impeachment trials. He wanted to maintain his power by silencing those in lower positions of power who did not agree with him. This is considered not only super-presidentialism, but also a tactic of an authoritarian politician. 
Authoritarian politicians reject the democratic rules and deny the legitimacy of rivals, and Trump does both of these. Trump rejected the democratic rules during his presidency by withholding the 400 million dollars of military aid from Ukraine. In a democratic system, he would not have had to make an agreement with a foreign country in order to dig up information on a potential opponent. In addition, Trump has repeatedly denied the legitimacy of Biden by saying things like Biden was “never smart” or “a good senator”. If Trump viewed Biden as a legitimate rival, he would not talk about him so disrespectfully in public. 
President Trump’s actions in this situation are undemocratic and can be considered authoritarian because Trump is rejecting the “democratic rules of the game”. He is firing his employees simply because they do not agree with him, not based on their work ethic or other important factors. In addition, many senators advised Trump that he should not fire Sondland, but he did not listen to them. It is obvious that Trump did not see any issue with his actions, implying that he is willing to discard anyone who is not in agreement with him.
The Ukraine situation violates the democratic norms of mutual toleration and forbearance, which state that competing parties should accept one another as legitimate rivals and politicians should not use their powers to their maximum extent. Trump does not accept Biden as a legitimate rival as he has repeatedly talked about him with disrespect and does not percieve him as a threat. In addition, he used his presidential power to fire Sondland and the Vindman twins, which is using his power to the maximum extent. If he were not president he would not be able to fire them without any justification. By violating these two democratic norms, Trump is leading America away from democracy with every action he takes.