Analyzed the approval of 3 (out of a total of 8) U.S. politicians that run for the nomination of the Democratic Party, in order to confront the current U.S. President, Donald Trump, in the presidential election ofDecember 14, 2020. The 3 politicians are: Bernie Sanders (active Senator from Vermont since 2007), Elizabeth Warren (active Senator from Massachusetts since 2013) and Mike Bloomberg (Mayor of New York City from 2002 to 2013 and CEO of Bloomberg L.P.). What we are going to focus on, is their respective popularity before and after the debate that was held in South Carolina at February 25, 2020.
