evidence: In a contest with historic turnout, President-elect Joe Biden topped President Trump by nearly 7 million votes, and 74 votes in the Electoral College, but his victory really was stitched together with narrow margins in a handful of states. [...] The graphic below shows the results in those six swing states, illustrating the especially close margins in Arizona, Georgia and Wisconsin. The tight races in the trio of states had a big electoral impact. As NPR's Domenico Montanaro has put it, "just 44,000 votes in Georgia, Arizona and Wisconsin separated Biden and Trump from a tie in the Electoral College."