Politico: “The threats come months ahead of a possible contested convention, where Trump is all-but certain to enter with a plurality of delegates bound to him on the first ballot, but he could lose support on subsequent ballots as rules will allow delegates to vote however they choose. And although the harassers are typically anonymous, many party leaders on the receiving end of these threats hold Trump himself at least partly responsible, viewing the intimidation efforts as a natural and obvious outgrowth of the candidate’s incendiary rhetoric.”

Washington Examiner: “Delegates concede that social media harassment and an international media spotlight scrutinizing their every move — and vote — could impact decision making in Cleveland.”

Washington Post: “Separate but simultaneous vetting processes are underway. Advisers to Sen. Ted Cruz of Texas and Ohio Gov. John Kasich said they are developing a list of prospects and researching their backgrounds. They are leaving open the possibility of announcing running mates as early as June, when primary voting concludes, or waiting until July at the Republican National Convention.”

“Front-runner Donald Trump said he is giving the choice of a running mate serious thought, but his campaign is holding off on vetting candidates until the nomination battle is over.”

“The Republican Party has seen nearly all of its traditions and expectations upended by this year’s presidential campaign. Now, the party is under pressure to change even the most basic rules of the game,” the Wall Street Journal reports.

“Case in point: The spring meeting of the Republican National Committee, which wrangled over a proposal to make it harder for party elders at the July convention to anoint a ‘white knight’ candidate should delegates deadlock over businessman Donald Trump and Sen. Ted Cruz of Texas.”

“Thursday’s spat, tamped down by a voice vote, could be just the first in a string of disputes over usually arcane procedures and rules as the divided party heads into the final months of battle over choosing the GOP’s nominee. Already, party veterans are warning that the convention in July could end up entangled in legalistic skirmishes over who can serve as a delegate and how business will be conducted—details that could shape the battle for the nomination.”