Kamala Harris’s Ascent Shows How Political Hardball—And Smart Polling—Pays Off

So far, enthusiasm for the Harris campaign has vindicated Democratic Party elites’ decision to push Joe Biden out of the race. Was this just a lucky guess based on political vibes? Or were there actual data supporting the decision?

Source: Kamala Harris’s Ascent Shows How Political Hardball—And Smart Polling—Pays Off | Scientific American