The truth is that neither of them are anything close to what Hitler was, and I may not know who your political opponents are but I promise they are not modern day Nazis either. (Even those actually calling themselves modern day Nazis are nothing in comparison to historical Nazis.)
It says something about how far removed we are from the events of World War II that we now sling the word Nazi around as a baseless insult. We use this word, make this comparison, with little to no thought for the actual Nazi's real and numerous victims. Do we really think that those who hold different opinions than our own are just as bad as those who perpetrated the Holocaust?!
There seems to be no bounds limiting who can be called a Nazi. Conservatives call Democrats Nazis over gun control and abortion. Democrats call Republicans Nazis for immigration policies and lack of LGBT legislation. This habit has so much become the norm that there is a name for it. Godwin's law is defined as the increasing probability that a Hitler/Nazi comparison will be made the longer an internet discussion goes on. Neither US Republicans or Democrats are defined by the same beliefs as the German Nazi party. Whatever minor parallels we do see are not comprehensive enough to make these comparisons. The fact that supposed Nazi-like policies are divided between our modern day parties should be proof of that.
But those who study history have to look for the signs that caused these events to happen. We have to be careful not to look the other way as Germans did when the Nazis came to power. These are popular justifications for making the Nazi accusations of our political opponents. Therefore, I would like to consider the situation that enabled Nazis to rise to power, keep it, and use it to violently target specific groups of people.
Comparing those we disagree with to Nazis demonstrates a lack of understanding of history and a lack of respect for those who suffered and died during Hitler's regime. Civil discourse is challenging, but without it we are no better than name-calling children. History can be used for good or evil; please use only for good.