Loren says that if a woman owns land, it transfers to her husband when they get married. In the first season, the homestead land was always referred to as Maude's land. Maude gave the land to Abigail.
Although Colorado was the first state to allow women the right to vote, it wasn't until 1893. This show is supposedly set in 1868.
The Reverend expected only men and two women to vote. After Sully enables all the town women the opportunity to vote, the Reverend will need twice as many ballots. It is unclear how he had enough ballots.