The US economic expansion is the longest ever. Here's how the top 5 Democratic candidates plan to ke

Today's top five Democratic candidates have plenty of ideas on how they'll keep the ongoing, historically strong period of economic expansion alive. Many fear a recession in 2020, and only some candidates have laid out specific plans on how they'll avoid economic downturn. Here's a rundown of the economic stances adopted by each of the five top candidates. Visit the Markets Insider homepage for more stories. Fears of a 2020 recession continue to grow as Federal Reserve indicators and...