Hillary Clinton has a new incentive to win the presidency, as Donald Trump said Wednesday night that his administration might re-open a probe into her classified email scandal, even if the Obama administration doesn't prosecute her.

Trump raised the issue during a boisterous rally in Berlin Maryland, after ripping 'crooked Hillary,' saying he would probe her 'for a second time.'

In a phone interview after the campaign stop, he told DailyMail.com exclusively that he's deadly serious.

'You have to do it. You have to take a second look,' he said, saying he would insist on 'a fair look.'

'It would have to be very, very fair and very, very above board.'

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DOUBLE-DIPPING DON: 'You have to do it. You have to take a second look,' Donald Trump said Wednesday of his plan to reopen a criminal inquiry into Hillary Clinton's email scandal if he wins the White House

WHAT DIFFERENCE DOES IT MAKE? Even if Clinton is cleared by the Obama administration, a Trump Justice Department could open a second criminal probe

But Trump insisted that he wouldn't drive an investigation from the Oval Office because it ould be ethically fraught.

'I wouldn't do that,' he pledged. 'I think that would be very inappropriate.'

'It would be up to the new attorney general, Trump said, 'but I would imagine the new attorney general would want to take a look at that.'

'You have the statute of limitations,' he acknowledged, 'but I would imagine that any attorney general would have to be serious about looking at it.'

Trump contrasted his outlook with that of the Obama administration, which he said during the rally was standing in the way of the investigative process.

'It looks to me like she's being protected,' he charged.

But he projected that 'we are going to beat her so badly. And then we'll take a look for a second time at what she did.'

'It's called statute of limitations, right? We'll take a look,' he vowed.

EAGER TO TALK: Trump raised the issue of a second Clinton investigation only briefly during his speech Wednesday night but expanded on the concept in a phone interview with DailyMail.com

Clinton faces a broad FBI criminal inquiry – which she calls a 'security review' – related to her exclusive use of a home-brew private email server for government business while she was secretary of state.

More than 2,000 classified documents have been identified among emails she stored there, drawing howls from Republicans but shoulder shrugs from Clintonworld.

A few of those records were classified at the Top Secret level or above.

Allowing classified material to migrate from its proper place to an unsecure location is a violation of the federal Espionage Act.

The law provides criminal penalties including prison sentences, even for people who don't intend to put state secrets at risk but do so through negligent care of official documents.

The investigation has reportedly expanded this year to include public corruption allegations.

Clinton is suspected of using her office to grant favors to foreign governments and companies that donated to her family foundation and provided her husband, former President Bill Clinton, with lucrative speaking engagements.

Clinton, who is the prohibitive favorite to win the Democratic presidential nomination, has denied any wrongdoing.

The FBI, whose director James Comey is personally overseeing the probe, could make a criminal referral to the Justice Department at any time.

NO RUSH: FBI Director James Comey has a 10-year term, so his G-men technically could pursue Clinton even into a Trump administration

HOT SEAT: Attorney General Loretta Lynch could choose to act on a hypothetical FBI criminal referral or to let it wither on the vine, but the next president will install a new top federal law enforcement officer

EXPANDED SCOPE: The FBI has reportedly moved beyond its original classified email probe to include public corruption questions about whether Hillary Clinton used the State Department to drum up donations to her family foundation and speaking engagements for former President Bill Clinton

It's unknown whether the Obama administration would choose to indict and prosecute her, but even the recommendation of criminal charges could spell a quick nose-dive for Clinton's campaign and throw the Democrats into disarray.

President Obama has insisted that he has not exerted any political influence on the process. But Loretta Lynch, his hand-picked attorney general, would make the final decision.

Comey, too, was appointed by Obama, in 2013. But unlike Lynch, his term extends for a mandatory 10 years – outlasting the man who gave him the job.

Since 1972 only one FBI director has been removed from his post by a sitting president.

Speculation has run rampant in Washington that Comey himself could step down in protest if the DOJ chooses not to act on a criminal referral, which functions as a formal request for prosecution.

Although the contents of such an FBI referral would not be made public, it's also likely that a reluctant Lynch would find herself contending with leaks from inside the agency.

WILD NIGHT IN DELMARVA: Wednesday's rally in Berlin, Maryland came within spitting distance of Delaware – and both states will hold primary elections on April 26

THOUSANDS: Officials let massive crowds into a Maryland high school and reportedly left 8,000 more on the outside looking in

Trump made his comments a day after victories in New York boosted both his and Clinton's presidential campaigns.

After spending much of an earlier rally in Indiana going after 'Lyin' Ted Cruz' and a 'rigged' political system, on Wednesday night, he kicked off his event in Maryland by going hard after Clinton.

'You know, we are going to beat Crooked Hillary so badly,' Trump vowed.

'It's going to be something that you're going to watch and you're going to enjoy watching,' he told a packed high school auditorium with about 1,500 people. Maryland votes on April 26th.

'Crooked Hillary Clinton will not have a chance. She's not bringing jobs back. She doesn't know about the economy. She makes bad decisions,' the business mogul continued.

'You know what Bernie Sanders said about her twice, you know that. Number one, he said she wasn't qualified. That's tough. That's tough. But he said "bad judgment," she's got bad judgment.'