It doesn't help that in many cases, even the "better" choice in candidate lies considerable amounts along with people and party that support them.

It's not like we got the Truth Party versus the Liar Party, Its more like "Lies a bit more often party" and "Lies a bit less party" because both sides know propaganda works and uses it. And when you add in social biases there are enough lies to go around for either starting position to point at their perceived opposition party and proclaim them untrustworthy. Only a fraction of people are going to put in more effort to discern what is truth and keep track of who lies more and what lies are bigger or not, the rest decided to bandwagon along with their aligned "friends" as soon as they started getting confused by deception on both sides.

Also I don't think US political parties and politicians align well with the US population to start with. If someone disagrees with what 80% of what one party does, and 70% of what the other part does, their only choices are to pick a party they inherently disagree with slightly less or not vote. People who say out loud they think both parties are garbage are often shut down by people on both sides like they are planted opposition and shuns anyone who dares not give full support and backing all the time.

Give me an example of Harris outright lying, please.