Mostly agree: Many of the candidates favor reforming the American health care system to varying degrees, which is criticized as costly and inefficient. And they back expanding health care coverage to more Americans and improving on the Affordable Care Act, which allows Americans to purchase federally subsidized health insurance via health exchanges.
The divide: Democrats are split on the mechanisms to achieve universal health coverage.
While Sanders and Warren support "Medicare for All," a proposal to create a government-run insurance program funded by taxpayers that would virtually eliminate private health insurance, many of the candidates prefer less sweeping changes.
Biden backs a public option, as do Mayor Pete Buttigieg, Sen. Amy Klobuchar, and former Rep. Beto O'Rourke. That course would allow Americans to choose between private coverage and a government health program. But many candidates have yet to put forward detailed proposals on the plans and cost to taxpayers.
Mostly agree: The Democratic candidates favor taking steps to preserve the environment and taking action to alleviate the worst effects of climate change.
Most candidates back the "Green New Deal," a sweeping plan that would transition the American economy from fossil fuels to clean energy and curb greenhouse gas emissions.
That hasn't stopped other Democrats from trying to match Inslee. Warren bills her "green manufacturing plan" as a $2 trillion investment in climate-friendly industries that would boost American manufacturing and promote job creation.
O'Rourke has also released a climate plan with an eventual $5 trillion price tag that sets a legally-binding target of net-zero greenhouse gas emissions by 2050.
Mostly agree: Most Democratic candidates support alleviating income inequality. Raising minimum wages to $15 an hour, reducing unemployment, and student debt are also areas where there is plenty of agreement.
The divide: Depending on the issue and their worldview, candidates diverge on the extent of government intervention into the economy and how to pay for their proposals.
Warren has released plans to increase access to affordable housing and ensure universal child care, paid for by a tax on corporations and the assets of the wealthy.
Both Warren and Sanders have relied on such taxes on the rich to pay for their expensive proposals, with both putting forward plans to drastically reduce people's student debt.
Mostly agree: Most of the candidates support legalizing marijuana, reversing the era of mass incarceration and policing reforms that would empower communities by creating avenues for more transparency from law enforcement. Many also support ending capital punishment.
The divide: Differences emerge in focus and approach to reforming the judicial system and policing.
Gillibrand has talked about "the unique challenges" the criminal justice system poses for women. She is seeking more protection for incarcerated pregnant women and creating prison alternatives for those convicted of low-level nonviolent crimes.
Booker supports shortening prison sentences for nonviolent drug offenders. And he's proposed granting clemency to thousands of people convicted of nonviolent drug offenses. Buttigieg would do the same for similar offenders by getting rid of mandatory minimums.
Castro issued a plan that would mandate implicit bias training and the use of body cameras for police officers. He also backs drastically restricting the instances lethal force can be used.
Mostly agree: Plenty of the Democratic candidates for president support H.R. 40, a House resolution that would establish a committee to study reparations for the descendants of slaves.
They've expressed concern over the racial wealth gap, which shows the median white household has 10 times more wealth than the median black household.
The divide: How reparations would be provided remains a point of contention, as some candidates like O'Rourke and Klobuchar do not favor direct cash payments. But Marianne Williamson has called to set aside $200 billion to $500 billion for a reparations program.
Other candidates have also proposed race-conscious policies that explicitly address racial inequality. Warren has a plan to level the economic field for minority-owned businesses and another to create a housing program to benefit communities affected by redlining, a form of housing discrimination once practiced by the federal government.
Sanders, on the other hand, argues that broadly helping the poor will address longstanding racial inequality. He backs the 10-20-30 antipoverty plan. It's congressional legislation that would direct 10 percent federal resources to communities where at least 20 percent of the population have lived under the poverty line for 30 years.
For Democrats, that means recommitting the country to its international obligations such as its ties to NATO and the European Union and to reverse Trump's "America First" policies and rhetoric. Many have also called to withdraw US troops from Afghanistan, now well into its 18th year.
The divide: Though it hasn't been a frequent topic of discussion, foreign policy is an area where candidates are diverging over how to use American power.
Biden and Buttigieg are two candidates seeking to promote free trade and liberal democracy, two notions that underpin the traditional international order.
Sanders, however, believes the existing liberal order has failed. Alongside Warren, he is seeking to readjust the global economic model that he believes failed the working classes in other nations.