Republican front-runner Donald Trump maintained his lead Wednesday in four statewide polls in New Hampshire, New Jersey and Florida, but placed third in a Colorado poll. On the Democratic side, Bernie Sanders edged out Hillary Clinton for the lead in one New Hampshire poll.

Younger voters helped push Sanders one point ahead of Clinton, 45 percent to 44 percent.

Trump took 27 percent in Fox News' poll of New Hampshire Republican primary voters. Florida Sen. Marco Rubio came in second with 13 percent, followed by Texas Sen. Ted Cruz at 11 percent. Retired neurosurgeon Ben Carson and former Florida Gov. Jeb Bush tied with 9 percent.

In another New Hampshire poll, conducted by Boston WBUR News, Trump garnered 22 percent support, far ahead of Carson and Rubio, who tied for second with 11 percent, reported The Hill. Cruz came in third with 8 percent, followed by Bush with 7 percent.

Most of the candidates stayed consistent in their polling numbers, with the exception of Carson, who dropped 8 percent since WBUR's last poll.

The poll was conducted among 405 likely Republican primary voters and has a margin of error of plus or minus 4.9 percentage points.

New Hampshire holds its primary on Feb. 9 - the first in the nation. 

Trump also came out on top in Fairleigh Dickinson University's poll of New Jersey voters, with 31 percent compared to Rubio in second with 18 percent.

Carson, at 11 percent, was the only other candidate to place in double digits. New Jersey Gov. Chris Christie placed fourth in his own state with 9 percent - about half the support he had in June.

For the Democrats, Clinton beat out Sanders, 64 percent to 27 percent.

The poll of 830 registered voters has a margin of error of plus or minus 3.9 percentage points.

In Florida, a poll from Florida Atlantic University found Trump with 36 percent support, beating both Rubio and Bush - the two candidates who have held public office in Florida. Rubio took 18 percent, followed by Carson with 15 percent, Cruz with 10 percent and Bush with 9 percent.

Cinton won two-thirds of the Democratic respondents in the poll, conducted immediately after Saturday's Democratic debate, while Sanders won 22 percent and former Maryland Gov. Martin O'Malley took 4 percent.

It's a completely different story for Trump in a Quinnipiac poll released Wednesday out of Colorado, where the real estate mogul placed third, a position he hasn't been in for months. Carson was the clear winner among Republicans in that poll, with 25 percent. When matched up head-to-head against Clinton, Carson came out on top with 52 percent compared to the former secretary of state's 38 percent.

Rubio trailed in the Republican race with 19 percent, followed by Trump with 17 percent.