The Latest: Kaine, wife attend Catholic mass in Richmond

The Latest on the 2016 presidential race (all times EDT):

11:15 a.m.

Tim Kaine and his wife, Anne Holton, were back at their longtime church in Richmond, Virginia, on Sunday, a day after the Virginia senator made his campaign debut with presumptive Democratic presidential nominee Hillary Clinton as her running mate.

Kaine — a former choir member at St. Elizabeth Catholic Church — sang a solo during Communion.

His wife spoke briefly at the end of the service, telling parishioners how important they've been in their lives.

She said "you have helped shape us" and that she and her husband "will really need your prayers."

And then, with the November election in mind, she said: "We will all have a big party at the other end, no matter what happens."

St. Elizabeth's is a majority black church in Richmond's Highland Park area.


10:15 a.m.

Bernie Sanders says he wishes Hillary Clinton had picked someone like Massachusetts Sen. Elizabeth Warren for her running mate instead of Virginia Sen. Tim Kaine.

Sanders tells NBC's "Meet the Press," that Kaine is a "very, very smart guy" and a "very nice guy" but wouldn't have been his vice presidential choice.

Sanders — who describes himself as a democratic socialist — says Kaine is more conservative than he is.

Warren is known for her fiery edges, particularly when going after Wall Street and big banks, and is a favorite of the party's liberal base.


9:35 a.m.

Bernie Sanders wants the head of the Democratic National Committee to step down — after leaked emails suggested the party played favorites during the presidential primary.

Here's what Sanders tells ABC's "This Week": "I'm not shocked, but I am disappointed."

Emails posted to the website Wikileaks show that at least some DNC officials were looking at ways to undercut Sanders' campaign, including questioning his religious beliefs.

Sanders says the party chairwoman, Rep., Debbie Wasserman Schultz, should resign immediately.

The Vermont senator says a new leader is needed to focus the DNC on defeating Donald Trump, attracting young voters and improving the economy.


9:30 a.m.

Hillary Clinton's campaign manager accuses Russia of leaking emails on purpose from the Democratic National Committee to help Republican Donald Trump in the presidential election.

Wikileaks has posted emails that including several denunciations of Clinton's primary rival, Bernie Sanders, and his supporters.

Robby Mook says on CNN's 'State of the Union" that experts are telling the campaign "Russian state actors" broke into the DNC's emails, and that other experts say these Russians are now selectively releasing the emails.

He says it's no coincidence the emails are coming out on the eve of the party's nominating convention in Philadelphia.


9 a.m.

President Barack Obama says Donald Trump's suggestion that the U.S. might not come to the defense of NATO allies is another sign of what he calls Trump's "lack of preparedness" on foreign policy.

Obama tells CBS' "Face the Nation" that Trump's comments amount to an admission that the U.S. "might not abide" by NATO's "most central tenet."

NATO members promise that an attack against any of them is considered an assault against all.


8:50 a.m.

It's become a bit easier for Hillary Clinton to formally claim the nomination at the upcoming Democratic National Convention.

The Democratic National Committee has released a slightly trimmed list of superdelegates — those are the party officials who can back any candidate.

There are now 4,763 total delegates, and 712 of them are superdelegates.

Two superdelegates left their positions in the last month, while Rep. Mark Takai of Hawaii died from cancer.

It now takes 2,382 delegates to formally clinch the nomination.

Heading into the convention, Clinton now has 2,814, when including superdelegates, according to an Associated Press count. Sanders has 1,893.

More than 50 remain uncommitted.