Ron Elving

AP's tally shows Hillary Clinton has locked up the nomination. Bernie Sanders is still in the race. David Greene talks to the N.J. chairman of Bernie Sanders' campaign Assemblyman John Wisniewski.

Democratic presidential candidate Bernie Sanders has said he will contest every last vote. But does anyone think he will command as much attention after Tuesday's primary as he did this past weekend?

Ahead of Tuesday's California primary, the legacy of one of the state's — and the nation's — most influential politicians still resonates: President Ronald Reagan.

Donald Trump has been the presumptive Republican nominee since last month. Hillary Clinton expects to grab that title Tuesday. But that isn't the same thing as officially securing the nomination.

California once played the role of a baseball team's ninth-inning pitcher, nailing down a win. Now it's more like a reserve player waiting on the bench in case of extra innings (which never happen).

Even some of Hillary Clinton's foremost fans and staunchest party regulars — such as House Democratic Leader Nancy Pelosi — are ready to talk about a fresh infusion of populism for the next round.

The "Nevada fracas" has created a media meme and a conversational focus for the conflict roiling the Democratic Party. This is because it encapsulates the grievances felt on both sides.

As the Democratic race goes on, voters in Kentucky and Oregon have their say in primaries Tuesday. Both states could be favorable for Sen. Bernie Sanders to extend a win streak against Hillary Clinton.

Speaker Paul Ryan is widely regarded as a thought leader in his party and in the conservative movement, generally. He speaks often of principles, and he seems to mean it. He has yet to back Trump.

One of the longest-held divides inside American politics is over the role of government. This election year, both the Democrats and the Republicans may be pushed into increasing the government's role.

Those gathered at Sen. Ted Cruz's event in Indianapolis are subdued, but "are still waiting to hear from their guy, hopefully to hear him say that he's going to stay in this race."

Hillary Clinton looks to the upcoming primaries to solidify her presidential campaign, while Bernie Sanders vows to stay in the race.

Trump's megawatt personality immediately became a magnet for viewers on TV, as did his browbeating battles with rivals and news moderators. Even without debates, Trump was seen everywhere on-screen.

Nine states still have to vote on the Democratic side, and Sanders is well-positioned to win several or most — but he needs to win all by overwhelming margins to catch Clinton in pledged delegates.

Beyond the prospect of winning the actual nomination, each of these men sees a chance to frame the issues and politics of the general election — and to influence party dynamics for years to come.

Donald Trump, with about 75 percent of the delegates, and Hillary Clinton, with 90 percent, are so far ahead in their parties that only the most extraordinary events could prevent their nominations.

Five states in the Northeast go to the polls Tuesday. Bernie Sanders faces a tough challenge on the Democratic side, while Donald Trump leads GOP polls.

The last best chance to stop Donald Trump or Hillary Clinton may well be next week, when Pennsylvania, Maryland, Connecticut, Rhode Island and Delaware hold the next-to-last round of primaries.

The polls have closed in the New York Democratic and Republican primaries. NPR has the latest from Clinton and Trump headquarters.

Bernie Sanders' relentlessly aggressive strategy against Hillary Clinton in Thursday's debate is a defining moment, says NPR's Ron Elving — no matter who wins New York's Democratic primary Tuesday.