Trump at NRA Convention: 2nd Amendment 'Will Never Be Under Siege' While I'm President

Fox News senior political analyst Brit Hume said Tuesday that the Republican primaries are becoming a competition of which candidates can be most supportive of President Donald Trump.

"If you want to be nominated in a Republican primary, you can't really afford to get cross-ways with Trump," Hume said on "America's Newsroom."

"They're all trying to be the 'Trumpiest' of the candidates."

FOX NEWS MIDTERMS 2018 AMERICA'S ELECTION HQ

Polls were open Tuesday in North Carolina, West Virginia, Ohio and Indiana. In the Mountain State, Don Blankenship has vowed to stand with Trump, despite the president telling voters not to support him.

Blankenship is a former coal baron who spent a year in jail after the Upper Big Branch Mine explosion and has been criticized for his incendiary rhetoric against Chinese family members of Sen. Mitch McConnell.

To the great people of West Virginia we have, together, a really great chance to keep making a big difference. Problem is, Don Blankenship, currently running for Senate, can’t win the General Election in your State...No way! Remember Alabama. Vote Rep. Jenkins or A.G. Morrisey! — Donald J. Trump (@realDonaldTrump) May 7, 2018

Hume compared Blankenship to Alabama senatorial candidate Roy Moore, who lost to Sen. Doug Jones last year after allegations of sexual misconduct with underage girls.

Blankenship faces Rep. Evan Jenkins of Huntington and State Attorney General Patrick Morrisey, with the winner seeking to unseat Democrat Sen. Joe Manchin III.

Hume said Republicans are hoping that Blankenship, who lives in a Las Vegas-area mansion, does not come out on top Tuesday night, since they do not think he can defeat Manchin.

Hume said overall, many voters appear to be sticking by Trump despite being opposed to a lot of things he says or tweets.

Watch more above.

Rove Blasts 'Bigot, Moron' Blankenship: If He Wins WV Primary, 'Kiss Winning Goodbye'

Blankenship on 'Cocaine Mitch' Backlash: 'Joe Manchin Has So Much More Baggage'

'My Father-In-Law Is An American': McConnell Dismisses 'Wealthy China-Person' Jab from WV GOP Candidate