Senators Marco Rubio and Ted Cruz and even Ohio Gov. John Kasich picked up more delegates than Republican presidential frontrunner Donald Trump in the party's conventions in Washington D.C. and Wyoming on Saturday but hardly enough to threaten Trump's still commanding lead.

The Associated Press declared Rubio the winner in heavily Democratic Washington, D.C., winning 10 delegates. Kasich placed second and won nine delegates. Cruz and Trump failed to get any delegates.

The turnout of just several thousand voters in D.C. was so small that balloting has been limited to one downtown hotel, according to Fox News.

Nevertheless, Rubio could count on his D.C. win as his third in the GOP race after he won the GOP caucuses in Minnesota and the party's primary in Puerto Rico.

In Wyoming, Cruz won nine of the 12 delegates that were up for grabs. Rubio and Trump won one apiece, the Associated Press reported.

However, the AP is not declaring a winner in Wyoming because another 14 of the state's delegates will be awarded at the party's state convention on April 16.

Trump still leads the overall race for delegates with 460. Cruz has 370, Rubio has 163 and John Kasich has 63, according to the latest tally by the New York Times/AP.

It takes 1,237 delegates to win the Republican nomination for president.

Meanwhile, Democratic presidential front-runner Hillary Clinton won her party's caucus in the Northern Mariana Islands, the U.S. territory in the Pacific Ocean, near Guam.

Clinton received 54 percent of 189 votes cast to earn four of the six delegates at stake. Rival Vermont Sen. Bernie Sanders won the two remaining delegates.

The candidates of both parties are training their sights on the five primaries on Tuesday, including the crucial winners-take-all contests in Ohio and Florida that could make-or-break the candidacies of Kasich and Rubio.

Big wins by Trump in those two states could be decisive in his march to the party nomination. Trump has a double-digit lead over Rubio in Florida and a single-digit lead over Kasich in Ohio, according to the RealClearPolitics poll average and CNN's Poll of Polls released on Friday.

The other states holding primaries on Tuesday are Missouri, North Carolina and Illinois.

In Ohio, Trump has support from 36 percent of voters while Kasich has 34 percent. Cruz has 17 percent while Rubio is at 8 percent.

Trump has a 40 percent lead in the Florida Republican primary, according to the CNN Poll of Polls averages. He is ahead of Rubio, who is attracting 26 percent of the vote, by double digits. Cruz has 18 percent of the vote and Kasich is at 8 percent.

On the Democratic side, Clinton is leading Sanders by more than 30 points in Florida. The former Secretary of State has 62 percent of support while Sanders has 31 percent of the vote.