Despite his lead in the delegate race to become the Republican Party's presidential nominee, there is little room for error for Donald Trump, especially after a win from fellow contender John Kasich in Ohio on Tuesday, leading to more talk of the possibility of a contested convention in Cleveland in July.

"It's probably slightly better than a 50/50 chance we'll go to Cleveland without an absolute nominee," said Steve House, chairman of the Colorado Republican Party.

There are a lot of 'if's' involved, but should either Cruz or Kasich tighten up the race to the point a contested convention does occur, the state GOP's decision to wait before its delegates pledge their votes is looking much wiser.

The decision bucked the party trend, but was made to avoid having delegates vote for candidates who would eventually drop out of the race.

"Therefore, all of the delegates are unpledged, they're not committed, they're not bound to vote for anyone," said Norman Provizer, a political science professor at Metro State University of Denver. "We were kind of irrelevant, but of course, this is such a strange year, that we are no longer potentially irrelevant and that's because of the notion that there might be a constested, open convention."

A contested convention could happen if no candidate walks into the convention without the minimum 1,237 delegates needed to be the Republican nominee, which would mean the race had tightened.

All of a sudden, Colorado's 37 Republican delegates, which will be elected by the state's convention on April 9, could play a role in picking the eventual nominee.

However, by April 9, House said, we'll have a better idea of who the delegates plan to vote for. Some, of course, may choose to stay unpledged until the national convention.

"I mean, this could be close enough that two, three, four, 10, 15 delegates make a difference," House said. "So, these 37 delegates ... could actually be the delegates that tip the race."

Provizer agrees, but admits the race would have to be unsually close.

"Depending on how things play out, it might well be -- it's a might -- it's a big might," he said. "If one of the candidates comes, say Donald Trump, and he has 1,230 delegates, all of a sudden, seven delegates unpledged to anybody become critical. They essentially can play a king maker role in that."

Another big role the delegates may play could come because of Rule 40, established before the 2012 Republican National Convention, which states a candidate must win a majority of the delegates in at least eight states, in addition to other requirements, to be a viable nominee.

"If any candidate gets 19 delegates from Colorado to pledge on that intent to run form, or declare that they're running for Cruz, Trump or Kasich, 19 is one more than half, which means they would then have the majority of delegates from Colorado," House said. "We could be the state that puts one candidate into eligibility for the eight state rule. We could also be the state that pushes one candidate over 1,000 delegates."