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

• 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.
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Fears of a 2020 recession continue to grow as Federal Reserve indicators and experts find new reasons for future economic downturn. The current economic cycle is the longest in history, and is sure to be popular topic ahead of next year's presidential election.

Here's where some of the top candidates in the Democratic primary stand when it comes to the economy, a possible recession, and how they've approached economic policy in the past.

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