Looking at elections in the United States, deeper trends in the population can be difficult to discern as the choices are between two capitalist parties that are both staunch defenders of capitalist rule and US imperialism.
There are no mass workers’ parties of any stripe. If there were, we may be in a better position to understand the relation of class forces.
This is not to say there are no differences between the two parties. There clearly are. At present, President Donald Trump has the backing of Republican politicians, with a few exceptions. Democratic politicians are generally opposed to Trump’s authoritarian drive, however ineffectually.
The picture is further complicated by the fact that there are competing factions in both parties, more in the open among the Democrats. For the Republicans, they are muffled by the need to go along with Trump’s significant base or face the crumbling of their party.