Riddle me this on mail voting Batman?

North Cape May - Riddle me this on mail voting Batman? If you have an appointment at a Doctor, Dentist, car inspection or at anyplace for a certain time, you should be there at the said time correct? So, why can't people go "VOTE" on November 3rd and they have "all day" to do it, also they've known for 4 years they have to do this, Please tell me Batman, I'm clueless? Well Robin, It's called stacking the deck! Democrats will yell foul when President Trump wins, never in the history of America have we done this, but only for Military members not able to vote in their home town.