They are very uninformed
https://theweek.com/articles/476186/are-republicans-better-informed-than-democrats?amp
https://www.justfacts.com/news_2019_survey_voter_knowledge
In total, the rates at which voters gave the correct answers varied from a high of 46% for Trump voters to a low of 32% for Democrat voters, with others falling in between as follows
46% for Trump voters
43% for males
41% for 35 to 64 year olds
38% for 65+ year olds
37% for 18 to 34 year olds
36% for females
32% for Democrat voters