Easier access leads to higher turnout, which tends to help team blue, which is why team red works so hard to make it harder to vote. However, you're absolutely

Easier access leads to higher turnout, which tends to help team blue, which is why team red works so hard to make it harder to vote. However, you're absolutely right that in many places, districts are so gerrymandered that turnout doesn't really make a difference. In some places, state governments are preparing to ignore the results of popular votes entirely, but that only applies to the presidential election.