This is quite a big jump as three weeks ago, Trump, 69, trailed Cruz by four points in this crucial state.

The poll comes days ahead of the first presidential vote is caste in the Iowa Caucus on Monday, which will formally kick off the process to elect the new US President in November.

The second and last four-year term of the US President Barack Obama ends on January 20, 2017.

As per the latest poll, Trump has support of 32 percent among likely Republican caucus goers.

He is followed by Cruz with 25 percent and Marco Rubio at 18 percent.

The polls also show that Trump has a massive 19 point lead over Cruz in New Hampshire while in South Carolina his lead is 16 points.

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