If you want some idea of the damage 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 could do to this country as president, consider this: As presumptive nominee of the GOP for less than a week, he’s already managed to split the Republican Party in half.

It’s astounding. And it’s playing out in prime time. One by one, loyal, lifelong and leading Republicans are being forced to ask themselves what has never before been at question: Will they support their party’s presidential nominee this year or not?

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The list of those who say they will support Trump includes some heavy-hitters: former Vice President Dick Cheney, 1996 presidential nominee Bob Dole, ex-White House contenders Ben Carson and Chris Christie, and Sens. Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE of Alabama, Mike Lee Michael (Mike) Shumway LeeMcConnell shores up GOP support for coronavirus package McConnell tries to unify GOP Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump MORE of Utah and a reluctant John McCain John Sidney McCainMcSally says current Senate should vote on Trump nominee Say what you will about the presidential candidates, as long as it isn't 'They're too old' The electoral reality that the media ignores MORE of Arizona, as well as former Speakers John Boehner John Andrew BoehnerLongtime House parliamentarian to step down Five things we learned from this year's primaries Bad blood between Pelosi, Meadows complicates coronavirus talks MORE (R-Ohio) and Newt Gingrich (R-Ga.), Govs. Paul LePage of Maine and Mary Fallin of Oklahoma, and Republican National Committee Chairman Reince Priebus.

But the list of those who say they will not yet or never will support Trump is a lot longer, and it’s growing stronger every day.

This list includes Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.), Sen. Lindsey Graham Lindsey Olin GrahamSenate Republicans face tough decision on replacing Ginsburg Democratic senator calls for eliminating filibuster, expanding Supreme Court if GOP fills vacancy What Senate Republicans have said about election-year Supreme Court vacancies MORE (R-S.C.), former Presidents George W. Bush and George H.W. Bush, Jeb Bush, 2012 nominee Mitt Romney and Sens. Ben Sasse of Nebraska, Jeff Flake Jeffrey (Jeff) Lane FlakeRepublican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style Bush endorsing Biden? Don't hold your breath MORE of Arizona and Dean Heller Dean Arthur HellerOn The Trail: Democrats plan to hammer Trump on Social Security, Medicare Lobbying World Democrats spend big to put Senate in play MORE of Nevada, as well as Massachusetts Govs. Charlie Baker and Illinois Gov. Bruce Rauner.

Meanwhile, Ted Cruz Rafael (Ted) Edward CruzSenate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week Renewed focus on Trump's Supreme Court list after Ginsburg's death MORE and John Kasich are yet to be heard from.

Not that we should feel sorry for Republicans caught in this dilemma. After all, Trumpism wasn’t forced on them. They brought it on themselves, with eight years of pure obstructionism and pandering to the Tea Party. The “Party of No” became the “Party of Nothing.” Increasingly angry over Washington’s failure to deliver on anything, Republican voters were ripe for some outsider to rise up and challenge the feckless leadership of their party. Enter Trump, who not only challenged the party establishment but destroyed it.

So what’s a loyal, card-carrying Republican supposed to do?

In theory, because there’s no third-party candidate, there are only three options: GOP voters can hold their nose and vote for Trump; vote for Democratic contenders Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE or Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE; or just not vote for president at all.

But in practice, Lindsey Graham is right. There’s really only one option: stay away from Trump, let him lose badly and then work to rebuild the Republican Party after he’s gone.

Yes, with Trump as the Republican nominee, this election is, at one level, a battle for the heart and soul of the Republican Party. But it’s much more than that. It’s also a battle for the future direction of this great country. There’s too much at stake for anyone to cast a vote for Donald Trump simply because he — for now, at least — has an “R” after his name.

The scramble to save the Republican Party can come in 2020. For now, the priority is to save the nation. If you believe in America, if you care about the issues, if you have any respect for the office of the presidency, there’s no way you can vote for the least qualified, least experienced, least knowledgeable candidate ever to run for president. #NeverTrump.

Press is host of “The Bill Press Show” on Free Speech TV and author of “Buyer’s Remorse: How Obama Let Progressives Down.”