Within politics, Scottish nationalism was held as a key ideology by the National Party of Scotland which later became the Scottish National Party. Their rise in popularity since the start of the 21st century led to the 2014 Scottish independence referendum. The referendum failed yet 44.70% of people in Scotland voted to leave the United Kingdom. Because of the United Kingdom decision to leave the European Union after the 2016 Brexit referendum, a second Scottish independence referendum has been proposed, as Scotland overall voted 62.0% against leaving the EU.