Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., shakes hands with Alabama State Sen. Henry Sanders at the Brown Chapel AME Church in Selma, Ala., on Tuesday, March 19, 2019. Democrats’ road back to the White House runs through the Republican-run South, and not just in the early nominating state of South Carolina. (Jake Crandall/The Montgomery Advertiser via AP)

Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., shakes hands with Alabama State Sen. Henry Sanders at the Brown Chapel AME Church in Selma, Ala., on Tuesday, March 19, 2019. Democrats’ road back to the White House runs through the Republican-run South, and not just in the early nominating state of South Carolina. (Jake Crandall/The Montgomery Advertiser via AP)

The Latest on the 2020 campaign season (all times Eastern):

7:40 p.m.

Democratic presidential candidates are making it clear that there are new voices competing for voters’ attention.

California Sen. Kamala Harris sent a signal to the nation’s old-guard that there’s a time to move aside. At an Atlanta church service Sunday dedicated to youth, the presidential candidate compared leadership to a relay race in which older leaders must ask themselves and decide “when to pass the baton.”

Sen. Kirsten Gillibrand made her official announcement in front of the Trump International Hotel and Tower in New York and called him a coward who “punches down.” Sen. Elizabeth Warren told a New Hampshire crowd that the NRA is holding Congress hostage on gun laws.

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6:40 p.m.

Howard Schultz will attend the annual conference of the American Israel Public Affairs Committee on Monday evening. That from Schultz aide Erin McPike.

Schultz’s decision to attend the annual AIPAC conference in Washington comes as Democrats have been grappling with the left’s criticism of Israel and as most presidential candidates are sitting this year’s conference out. Schultz is actively considering an independent presidential bid himself.

On Friday, Schultz responded to a tweet from the liberal advocacy group MoveOn, which has been urging Democratic presidential candidates not to attend. He said that the “unwillingness of the far left to even speak with people they may disagree with is one of the worst symbols of the dysfunction in Washington today.”

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2:30 p.m.

Sen. Elizabeth Warren says the National Rifle Association is holding “Congress hostage” when it comes to stemming gun violence.

The Massachusetts senator and Democratic presidential candidate tells a campaign rally that if seven children were dying from a mysterious virus, “we’d pull out all the stops till we figured out what was wrong.” But in terms of gun violence, she says the NRA “keeps calling the shots in Washington.”

Warren finished a two-day campaign trip to New Hampshire with an event at middle school in Conway Sunday afternoon.

Warren focused much of her speech on her approach to economics, but paid special attention to unions Sunday. She says more power needs to be put back in the hands of workers.

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1:50 p.m.

California Sen. Kamala Harris may be dropping a hint on what she thinks about former Vice President Joe Biden, who is considering a third bid for the White House.

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At an Atlanta church service Sunday, Harris compared leadership to a relay race in which each generation must ask themselves “what do we do during that period of time when we carry that baton.”

Then she added with a smile that for “the older leaders, it also becomes a question of let’s also know when to pass the baton.”

Harris is 54 years old. Biden is 76, and some of his supporters have said he’s aware that his age could be a political liability in the Democratic primary. He wouldn’t be the oldest contender, though. Vermont Sen. Bernie Sanders is 77.

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1:40 p.m.

Democratic presidential candidate Kirsten Gillibrand is assailing President Donald Trump as a coward who is “tearing apart the moral fabric of the vulnerable.”

The senator is speaking in New York, feet away from one of Trump’s signature properties, the Trump International Hotel and Tower.

She says that instead of building walls as Trump wants to do along the U.S.-Mexico border, Americans build bridges, community and hope.

Gillibrand also called for full release of special counsel Robert Mueller’s report in the Russia investigation. Attorney General William Barr was expected to release a summary of principal conclusions, but Democrats want to see the full details.

Gillibrand is trying to position herself in the crowded field of Democrats seeking the party’s nomination. While some hopefuls have shied away from mentioning Trump, Gillibrand has not hesitated to do so.

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1:25 p.m.

Democratic presidential candidate Beto O’Rourke is telling voters in Las Vegas that President Donald Trump bears blame for the separation of families at the U.S.-Mexico border but responsibility lies with everyone in the country to fix the situation.

O’Rourke spoke Sunday to more than 200 people packed into and snaking around a taco shop on the city’s north end. He says immigrant families are leaving their home countries and journeying on foot because they have no other choice.

The former Texas congressman says desperate families were broken up in the U.S. when they were at their most vulnerable and desperate moments, and what happened to them “is on every single one of us.”

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9 a.m.

As New York Sen. Kirsten Gillibrand officially kicks off her Democratic presidential campaign in New York City, her rivals are courting voters in early primary states.

Several Democratic White House hopefuls are campaigning Sunday, the day the Justice Department is expected to release key findings from special counsel Robert Mueller’s confidential report on the Russia investigation.

Vermont Sen. Bernie Sanders continues his California swing with a trip to San Francisco.

Massachusetts Sen. Elizabeth Warren and former Colorado Gov. John Hickenlooper are wrapping up campaign trips to New Hampshire.

California Sen. Kamala Harris is attending a church service before speaking at a rally in Atlanta at Morehouse College.