Why Joe Biden won

After a tense week of vote counting, Joe Biden is projected to win the 2020 presidential election. The race was called on Saturday morning, after Biden’s vote tally in Pennsylvania put him past the 270 electoral votes needed to secure the presidency.

President Trump outperformed polls that predicted a comfortable victory for Biden, but a series of closely won races in key swing states provided Biden with a commanding Electoral College advantage. If the current results hold, Biden will finish with 306 electoral votes — roughly the same number Trump...