WASHINGTON (AP) -- The presidential campaigns of Texas Sen. Ted Cruz and Ohio Gov. John Kasich say they are launching collaborative strategies to deprive Donald Trump the delegates needed to win the Republican nomination.

Both Cruz and Kasich's campaigns released statements Sunday saying that Cruz will focus his campaign resources on winning enough delegates in Indiana, while Kasich will focus his efforts on western states including Oregon and New Mexico.

Trump, the current front-runner, needs 1,237 delegates to win the Republican nomination. If he falls short, the Republican convention in July will evolve into a rare contested convention.

Trump has repeatedly denounced the system, saying he should win the nomination even if he falls slightly short of the majority -- something officials with the Republican National Committee have ruled out.

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