Trump promises lawsuit over Louisiana delegates
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Republican presidential front-runner Donald TrumpDonald TrumpGOP lawmakers praise Trump for Taiwan call Trump defends Taiwan call: President called me Bergdahl asks Obama for pardon MORE late Sunday promised to sue over delegate allocation from the Louisiana primary.

Trump in a tweet called Republican primary politics “unfair.”

In an interview earlier Sunday, Trump blasted a report that rival Ted CruzTed CruzLewandowski: Top Cruz aide advised Trump team before NH primary Five reasons why Donald Trump could be the 'Greatest Communicator' Victims of Nazi Art theft need Congress to HEAR MORE will pick up extra delegates from the contest.

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“Welcome to the Republican Party,” Trump said on ABC’s “This Week." “What’s going on in the Republican Party is a disgrace.”

"I won Louisiana and now I hear he's trying to steal delegates," Trump said, referring to Cruz.

"I have so many more votes and so many more delegates," Trump added. "And, frankly, whoever at the end, whoever has the most votes and the most delegates should be the nominee."

Cruz could end up getting 10 more delegates from Louisiana than Trump, according to The Wall Street Journal.

The newspaper reported that Cruz is likely to pick up the five delegates left behind when Marco RubioMarco RubioThe ignored question: What does the future Republican Party look like? Graham to roll out extension of Obama immigration program Trump and Cuba: A murky future MORE ended his campaign as well as the state's five unbound delegates who can back a candidate of their choosing.

Cruz spokesman Ron Nehring late Sunday tweeted that Trump's time might be better spent "reading rules" instead of sending "hate-tweets."

This report was updated at 7:06 a.m.