I'm an independent with the following voting history: HW Bush, Clinton, Clinton, W Bush, W Bush, McCain, Obama, Johnson (Couldn't vote for Hillary or Trump)
I'm truly as in the middle as can be, as I have beliefs pretty equally on both sides of the aisle. I think the two party system weakens our country. I don't feel like one party has done particularly better when in control than the other.
That said, I am voting for Biden, and it isn't close for me. Honestly, I don't remember ever being this invested in election in the past. However, I still am of the belief that no matter who wins and when it is declared, I will wake up the next day, go about my business and try to continue living my life as happily as I can and treating others as well as I can.
As for confidence, a few months ago, I thought that Trump was definitely going to win. The last couple of weeks, I felt pretty good about Biden's chances. Now, on election eve., I've got it extremely close, with Biden winning in my mind, but, it's at about 55% vs. 45% in my head.
To those that are much more passionate about their candidate and their party, I wish you luck and hope that you (and others like you) keep things under control. I do worry a lot about how extreme the reactions are going to be, regardless of who wins.