Original sentence: Election Day in the United Kingdom is by tradition a Thursday.It has been suggested that this tradition arose as the best of several circumstances: Friday pay-packets would lead to more drunken voters on Fridays and weekends; having the election as far after a Sunday as possible would reduce the influence of Sunday sermons; many towns held markets on Thursdays, thus the local population would be travelling to town that day anyway
Edited sentence: Currently there is a petition to change the day to Sunday.Election Day in the United Kingdom was changed to Thursday in 1931.In 1931 the UK national Government changed the day.It is unclear why the government changed the day to Thursday perhaps they were worried that week-end elections might lead to worker protests (General Strike etc)