A top conservative blog is urging Senate Republicans to confirm President Obama's Supreme Court pick after 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's win in Indiana's GOP presidential primary.

"Now that Donald Trump is the presumptive nominee, this is not even a close call. There is absolutely no reason to drag this out any longer. [Merrick] Garland is not a great choice, but he is not a terrible one, either," Leon H. Wolf, the managing editor of the conservative website RedState, wrote Wednesday.

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Senate Republican leadership has been adamant that Garland will not get a hearing or a vote and that the next president will fill the seat vacated by the late Justice Antonin Scalia.

Wolf, however, warned Wednesday that the "calculus has changed — confirm Merrick Garland before it is too late."

Wolf added that Republicans "must know" they will lose the White House, and likely the Senate, too, with Trump as their nominee. Senate Republicans are defending 24 seats in November, a handful in states previously carried by Obama.