Issue polls:

https://www.isidewith.com/elections/2020-presidential-quiz

http://selectsmart.com/president/

https://www.surveymonkey.com/curiosity/nbc-surveymonkey-poll/

The latest polling numbers:

https://www.realclearpolitics.com/epolls/latest_polls/president/#

https://projects.fivethirtyeight.com/polls/

Who’s running:

https://www.nytimes.com/interactive/2019/us/politics/2020-presidential-candidates.html

https://www.theatlantic.com/politics/archive/2019/05/2020-candidates-president-guide/582598/

Who’s qualified for the debates:

https://www.nytimes.com/interactive/2019/04/29/us/politics/democratic-primary-debates-2020.html

How much money have they raised:

https://www.nytimes.com/interactive/2019/us/politics/campaign-finance-2020-fundraising.html

What the candidates are talking about:

https://www.washingtonpost.com/graphics/politics/policy-2020/priorities-issues/?noredirect=on&utm_term=.6d029729f6c4

What the candidates are NOT talking about:

https://foreignpolicy.com/2019/05/11/2020-democratic-candidates-foreign-policy-election-biden-warren-sanders-kamala-buttigieg-trump/

who’s voting:

https://www.pewsocialtrends.org/essay/an-early-look-at-the-2020-electorate/