Weeks before the New Hampshire primary, Donald Trump increases his numbers among likely Republican voters from the state.

According to a Fox News poll conducted from Jan. 18 to 21, 31 percent likely Republican voters in New Hampshire will choose the real estate mogul as their president. Texas Sen. Ted Cruz and Florida Sen. Marco Rubio are in a close fight, with the former in second place with 14 percent and the latter with 13 percent. Ohio Gov. John Kasich follows with nine percent.

Former Florida Gov. Jeb Bush and New Jersey Gov. Chris Christie are tied in the fifth place with seven percent. Rand Paul and Ben Carson are also tied in the sixth place with five percent support each. Next is former Hewlett-Packard CEO Carly Fiorina with three percent and then former Arkansas governor Mike Huckabee with one percent.

The poll also revealed that 51 percent of likely Republican voters will vote in the New Hampshire primary election this February and generally, 61 percent of the voters are "extremely interested" in the 2016 presidential elections.

Meanwhile, a separate Fox News poll for the Iowa primary election also shows that Trump's support is getting stronger. He garnered 34 percent support from likely GOP voters from Iowa, gaining 11 points from his previous rating of 23 percent.

Cruz's rating has dropped from 27 to 23 percent, giving Trump an 11-point lead. Rubio has 12 percent. The rest have single-digit ratings: Carson with seven percent; Paul with six percent; Christie and Bush tie with four percent each; and Kasich, Huckabee, and former Pennsylvania Sen. Rick Santorum tied with two percent each.

In contrast to the New Hampshire primary poll, the Iowa poll reveals that 54 percent of likely GOP voters will definitely vote in the coming Iowa primary election and 57 percent of them are "extremely interested" in this year's election.