Businessman Donald Trump leads all Republican candidates with at least 678 delegates after Tuesday’s big night.

1,237 delegates are needed for the nomination.

There are 20 contests left.

Donald Trump needs 559 delegates to wrap up the nomination.

11 of those states are winner-take-all states.

If Donald Trump wins the states marked red-orange he will add an additional 435 delegates to his total.

Via No Quarters:

That means he would only need 129 more delegates in the final eight proportional states to wrap up the nomination.

Trump will likely wrap up the election by the end of May.

No Quarters reported:

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