After a long, drawn out fight, the United Kingdom will formally withdraw from the European Union. MEPs concluded the European Parliament’s Brexit vote by singing “Auld Lang Syne,” which was written by Scottish poet Robert Burns in 1788. #CNN

President Trump has energized American voters — his supporters and opponents — in the political process like never before. Chris Cillizza explains how the trends we’ve seen since the 2016 election are leading to potential record-breaking vote

CNN’s John King breaks down the numbers around President Trump’s approval ratings and the economy as the Democrats take the next step this week in picking their 2020 nominee.