19 to Watch in 2019 highlights politicians, activists and operatives across the country who are positioned to play a critical role in the political landscape leading up to 2020. From the new generation reshaping the Democratic Party to the behind-the-scenes players who keep Congress moving and those with their eyes on the presidential election, these are the people to watch over the next 12 months.

— By Anna Palmer, Jake Sherman, Daniel Lippman, Garrett Ross and Eli Okun.