Joe Biden:
Restore America's soul: bigotry is not an American value. 

Pete Buttigieg:
If I had been given a choice, I would have not been gay. 
National service can unite Americans. 
God does not have a political party.
Supports religious values and separation of church and state. 
Progressive, but not concerned with labels. 
Would be youngest president ever, and first mayor.

Julian Castro:
Make America smartest, healthiest, fairest & most prosperous. 

Tulsi Gabbard:
To understand socialism, look at Venezuela. 
Labels like "capitalist" and "socialist" are misused. 

Kirsten Gillibrand:
Pushed to oust Al Franken from Senate for sexual harassment. 

Kamala Harris:
FactCheck Constitutionally eligible to run for presidency. 

John Hickenlooper:
Work with Republicans to advance progressive priorities.

Amy Klobuchar:
Minnesota Nice: reliable, calm, aw-shucks bipartisanship. 
Nicknamed "The Senator of Small Things," but some are big.

Bernie Sanders:
Mainstream media prefers "realistic" candidates over Bernie. 

Source: OnTheIssues.org