Over and over, the Democrats gathered at their national convention predicted Kamala Harris would defeat Donald Trump. But a stark reality exists as thousands of Democratic activists, operatives and party leaders begin leaving Chicago: The real test for Harris has only just begun. Harris has barely started to outline detailed policy plans. She has yet to sit down for even one comprehensive media interview to face difficult questions about her flip-flops on policy. And she remains largely undefined in the minds of many voters. Michelle Obama offered a sober warning about the 73-day sprint to Election Day: “No matter how good we feel tonight or tomorrow or the next day, this is going to be an uphill battle.”