 Greg Clugston, Washington. Could be a big change on the way in Great Britain. Voters in the UK casting their ballots today in a national election to choose the 650 lawmakers who will sit in Parliament for the next five years. Outgoing Prime Minister Rishi Sunak surprised his own party in May when he called the election, which could have taken place as late as January of 2025. An exit poll suggesting the Labour Party is headed for a huge majority.