What 2020 Democrats' fundraising says about 'donor energy'

The past year marked dramatic changes and new trends in campaign finance. In 2019, two billionaires bankrolled their own presidential campaigns, while other candidates wooed big donors with pricey fundraisers. And some contenders struggled to take in enough cash to keep their campaigns running. The Washington Post’s Michelle Ye Hee Lee joins Judy Woodruff to discuss 2019 money in politics.