A national poll released on the eve of Tuesday’s pivotal Indiana primary showed Republican Donald Trump with a 2-point lead over the presumptive Democratic nominee, Hillary Clinton.

Trump’s 41 percent to 39 percent edge marked the first time he has led the race since October.

As recently as March, Clinton led 41 to 36, according to Rasmussen Reports, which conducted the survey.

“I will defeat Crooked Hillary Clinton on 11/8/2016,” Trump triumphantly tweeted on Monday, shortly after the poll’s release.

But the national telephone survey of likely voters also showed that 15 percent of respondents would rather cast their ballots for anyone but the two front-runners.

The tycoon has the support of 73 percent of Republicans, while 77 percent of Democrats back the former first lady.

Trump picked off 15 percent of Democrats, while 8 percent of GOP voters prefer Clinton.

The former “Apprentice” TV star leads 48 percent to 35 percent among men, while Clinton is favored by women, 44 to 34.

Clinton also has a 38-to- 32 lead among those under the age of 40, traditionally a reliable Democratic base, suggesting that younger voters — many of whom now prefer Democrat Bernie Sanders — will be a major target in the upcoming campaign.

Among voters not affiliated with either major party, Trump leads 37 percent to 31 percent, with 23 percent backing another candidate.

The survey of 1,000 likely voters was conducted on April 27 and 28 and has a margin of error of plus or minus 3 points.

While it’s noteworthy in showing Trump now ahead, Rasmussen got it wrong in separate polls in the days leading up to the November 2012 presidential election.

On Nov. 1, 2012, the outfit had Republican Mitt Romney ahead of President Obama, 49 percent to 47 percent. Four days later, it had Romney leading, 49 to 48.

Rasmussen, however, did get it right in 2008.

Meanwhile, Trump is walloping Cruz in a poll of California voters released Monday. The KABC poll showed that 54 percent of Goden State Republicans support Trump, with just 20 percent backing Cruz.

The California primary is on June 7.

Not all polling news, however, was good for Team Trump on Monday.

A survey by the GOP-leaning Associated Industries of Florida showed that even though 42 percent of Florida residents have a “very unfavorable” view of Clinton, she would still crush either Trump or Ted Cruz in the battleground state.