Republican presidential front-runner Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE plans to give a series of policy speeches in the coming weeks, The Washington Post reported Tuesday.

The speeches will be given in more formal settings — such as economic clubs or the National Press Club in Washington — rather than at campaign rallies.

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Trump campaign manager Corey Lewandowsk said the policy speeches reflect "the natural maturation of the campaign," and will cover topics such as strengthening the military, reforming education and selecting Supreme Court justices.

Trump has pledged to release a list of potential nominees to the high court in the coming weeks. Retired neurosurgeon Ben Carson, who has endorsed Trump, said he has talked to the businessman about the list.

"We now talk from time to time, including today, and we went over his list, which I think would be extraordinary," Carson said.

"He's got his team studying these people very carefully."

In another attempt to flesh out his policy positions, Trump outlined how he would get Mexico to pay for his proposed border wall in a memo published Tuesday by the Post.