The big thing is hydrating the day before the race. I will have 20 ounces of water right when I get up in the morning the day before, and I'll drink throughout the day.
I say this as a Democrat, for whom the Republican domination of government threatens many values that I hold to be important to America's role as a light among nations. But there are no values that matter to me that will not be gravely endangered if we lose this war.