Three Democratic presidential contenders — Massachusetts Rep. Seth Moulton, Ohio Rep. Tim Ryan, and California Rep. Eric Swalwell — answered voters' questions in a series of CNN town halls on Sunday night.

In case you missed them, here are three key quotes from each of the candidates:

Massachusetts Rep. Seth Moulton

On gun control: “Weapons of war have no place on our streets or in our schools,” the Massachusetts congressman and Iraq War veteran said. “And whether it’s declaring a national emergency or pursuing executive action, I will do whatever I can to actually make progress on this gun violence plague in America.”

On racism in the US: “If this country wasn’t racist, Stacey Abrams would be governor. Because people of color are being systemically denied the most basic right in a democracy, which is the right to vote.”

On why he's running for president: “I think this is the most important election of our lifetimes. It’s about who we are as a country, it’s about our values, it’s about what kind of future we’re going to build. It’s about whether we can get united around a common mission not to make America great again, looking backwards to some mythical version of the past that never really existed, but whether we can make America better than it’s ever been before.”

Ohio Rep. Tim Ryan

On the Virginia shooting and gun control in the US: “That someone can have a silencer or can have extended magazine in the United States today -- those need to be banned in the United States,” he said. “That should not be a partisan issue and the NRA needs to get off the dime and help the American people make that happen.”

On his relationship to laid-off autoworkers: “In many ways I believe I’m the only one in this campaign who deeply, deeply, deeply understands what those workers are going through. When these plants close, I know who’s working in them. They’re my family. They’re my friends.”

On impeachment proceedings against President Trump: “We (in Congress) oversee Article II of the Constitution, which is the president -- not the king. And when you think that the President has committed comes -- and I’ve read the Mueller report and think he obstructed (justice) on multiple occasions -- we have a responsibility.”

California Rep. Eric Swalwell

On why he's running for president: "As president, I’m not going to negotiate down anymore. Do we want to stop the bleeding or do we want to stop the shootings. I’m running for president to stop the shootings."

On health care: "I think engrained in our DNA is choice. People want to have choices, but they also expect that the government should offer an affordable plan if their employer is providing it."

On white nationalism: “I will denounce anti-Semitism even if an anti-semite praises me. That sounds like something easy to ask, but we can’t even get that from the President of the United States. Leadership starts at the top.”