From the Center   This has already been an incredibly unusual election for all sorts of reasons. Joe Biden and Donald Trump were the first presidential rematch since 1956. Trump is the first former president to seek the White House in over a century. Biden became the first incumbent to withdraw from the race so close to Election Day in the modern political era, making Kamala Harris the first non-white woman to win the nomination of a major party in our nation’s history. But if...