President Donald Trump trails presumptive Democratic presidential candidate Joe Biden in all six of the key battleground states less than 100 days ahead of the November election. Meanwhile, Biden actually only needs to win three of those states, while maintaining all the states former Democratic presidential candidate Hillary Clinton won in 2016, to secure victory in November.
Under the Electoral College system, each state is granted a certain number of electoral votes in proportion to its population. In 2016, Clinton garnered nearly 3 million more individual votes than Trump, but the president won by a significant margin in the Electoral College due to a series of wins in battleground states. Trump won 306 electoral votes while Clinton only garnered 232.
Several of the key battleground states – including Michigan, Wisconsin, Florida and Pennsylvania – had gone blue for former President Barack Obama in 2008 and 2012 before flipping red for Trump. Democrats aim to regain these states come November, while they hope to pick up others that have historically leaned Republican.