Scott Detrow

Big budget data operations have become a mainstay for presidential campaigns in recent years, but Donald Trump says he has no plans to invest in microtargeting and voter models.

Since 2012, the U.S. has produced more oil and gas than any other country even as solar and wind power have also experienced huge growth.

Correspondents, editors and producers from our newsroom share the pieces that have kept them reading, using the #NPRreads hashtag. Each weekend, we highlight some of the best stories.

Bernie Sanders has made it clear he doesn't like closed presidential primaries. Making big changes to the system may be tough to do, though.

Bernie Sanders is pushing for Democrats to do away with closed presidential primaries.

Donald Trump argues his route to the White House runs through traditionally Democratic states such as Pennsylvania. But it's not clear the Keystone State will make that large an impact this fall.

Some Republicans who won't support Donald Trump as the party's presidential nominee are calling for a conservative third-party candidate. Getting one on the ballot, though, is a complicated process.

O'Rourke will be voting for Hillary Clinton, but he's not happy about it. "She's wrong about absolutely everything, but she's wrong within normal parameters," he said.

The latest: Bobby Knight, ex-Indiana Hoosiers basketball coach. Like Trump, the athletes and coaches have cultivated brash personalities that have won over devoted fans.

John Kasich and Ted Cruz will stay out of each other's way in three upcoming primary states. The nonaggression pact is an attempt to block Donald Trump from clinching the GOP nomination.

Trump said he would ask the party to change its platform to allow for exceptions to banning abortion. The party's language on the issue has been consistent since 1984.

With a narrow path to the GOP nomination, Donald Trump says he is making a concerted effort to run a more traditional presidential campaign.

A likely contested convention has Republicans hunting for delegates everywhere, including some of the most democratic Congressional districts in America.

With New York State divvying most of its delegates up by congressional district, Republicans in heavily-Democratic pockets like The Bronx are reveling in their roles as super-voters.

The Texas senator won all of Colorado's available delegates, thanks in large part to an organized campaign strategy that could give Trump a real fight for the nomination.

Every delegate counts, and Ted Cruz has been working hard to win delegates at Colorado's GOP state convention this weekend in his effort to deny Donald Trump the nomination.

Colorado Republicans meet Saturday to elect delegates for the Republican National Convention. Ted Cruz has been well-organized in the state.

It's mathematically impossible for Donald Trump to get a majority of delegates until the last day of GOP primary voting in June. Wisconsin voters could make it harder to get a majority at all.

Speaking at Stanford University, she argued that Republicans' approach to fighting ISIS would "make America less safe and the world more dangerous."

Tens of thousands of Utah Republicans will cast their ballots for president via the Internet. The state party says it's the largest online presidential vote yet.