Not sure I’d say it’s actually “the best,” but I came across this image again yesterday and it’s a good visual.

And like the other poster said, this only affects representation votes, not statewide elections. Things like governor or president are not affected by gerrymandering directly.

However, people in heavily gerrymandered states may become disillusioned with voting and feel like their vote doesn’t matter, so it can discourage them from voting even when their vote would count.

During the last election I was surprised to find there are a good number of people who genuinely didn’t realize that gerrymandering didn’t affect their vote for president. I did my best to correct it whenever I came across it.