Presidents traditionally do not campaign over the weekend before the election - unless they believe they are in real trouble ...
In 1980, Carter was ahead 7-10 points just before the last debate a week before the election. By that Friday, his lead was 3-5 points and his advisors told him that he HAD to campaign Sat. AND Sun.
He did - and the snap polls on Sun. said he was in a virtual tie. So, he had to campaign on Mon. He did. The snap polls said he was behind 5-7 points on Mon. nite.
Carter knew then that he had lost the election ...