Final answer:
The president elected in 2020 was from the Democratic Party. Joe Biden won against Donald Trump, garnering 306 Electoral College votes and the majority of the popular vote.
Step-by-step explanation:
The political party of the president elected in 2020 is the Democratic Party. Democratic nominee Joe Biden won the presidential election against incumbent President Donald Trump. Biden secured 306 Electoral College votes, capturing 51.3% of the total votes cast, in contrast to Trump's 47%. The election took place during the COVID-19 pandemic which influenced the campaign strategies; President Trump continued with large in-person rallies, while Biden's campaign primarily engaged voters virtually.