Cruz Takes Delegates in Wyoming, and Rubio Wins in Washington, D.C.

Senator Ted Cruz won the most delegates awarded in the Wyoming Republican conventions on Saturday, while Senator Marco Rubio narrowly beat Gov. John Kasich in Washington, D.C., on the last day of voting before Tuesday’s make-or-break primaries in five large states.

Hillary Clinton prevailed in the Northern Mariana Islands, the only Democratic contest of the day. In Guam, Republicans chose nine delegates for the party’s July convention, but the delegates were officially unpledged to any candidate.

Compared with the primaries coming in Florida, Illinois, Missouri, North Carolina and Ohio — in what is shaping up to be a second Super Tuesday — these contests made for a minor Saturday, with Mr. Cruz trimming a bit from Donald J. Trump’s delegate lead.

But in Washington, where Republicans are relatively rare and tend to work as lobbyists, lawyers and Capitol Hill staff members, Saturday amounted to what might be the establishment’s last chance to roar back at the angry anti-Washington masses who have dominated the electorate so far. The two so-called establishment candidates, Mr. Rubio and Mr. Kasich, won 37 percent and 36 percent of the vote, with Mr. Trump and Mr. Cruz far behind.