And then there were two. With apologies to Hawaii congresswoman Tulsi Gabbard, the Democratic presidential race, which once featured more than 20 contestants of some notoriety, is now down to former Vice President Joe Biden and Vermont Sen. Bernie Sanders. The fight for the Democrats’ presidential nomination has essentially returned to where it was for most of 2019 now that real voting has started, with Barack Obama’s two-term vice president and the runner-up from the 2016 primaries battling it out — though the race isn’t nearly as close as it would seem from the delegate math. In a stunning comeback, Biden has a commanding advantage in this two-way matchup. He may have even sealed the deal with an easy double-digit win in Michigan, where Sanders had gotten his campaign back on track with an upset four years ago. Missouri and Mississippi were called for Biden moments after the polls closed. He finally had momentum, and small state caucuses aside, nowhere looked safe from Biden dominating. After finishing fourth in Iowa, fifth in New Hampshire, and a distant second in Nevada, Biden tumbled out of first place in the national polls, and his long career in politics appeared finished. “Blood in the water,” read one major national outlet’s headline; “doomed,” said another. Then, Biden rebounded with a decisive victory in South Carolina. A win there was expected — the Palmetto State was Biden’s firewall, after all...