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Deep down I hope even you realize Republicans wanted to block a liberal justice in 2016 and democrats want to block a conservative one now. The election is in like 2 months. You are just giving free ammo to the democrats to pack the court because Republicans feel they will lose 2020 elections.
Historically, Republicans have seen their greatest successes at the ballot box when they don't try to placate the Leftist/Liberal/Democrat/Socialist side of the aisle. if we wanted those people's policies and programs, we would have elected them instead.
When the GOP sticks to their principles and act according to what the majority of conservatives support, they tend to enjoy better election results than when they capitulate in the name of cooperation.
We have several branches to create balance in government. When that balance is upset, the voters tend to correct it. Same for party control within the branches. When one party is in power for too long, they get stupid. Taking their toys away is the best way to fix that.
I wish the politicians could remember how that works long after inauguration.
Based on your comments and arguments, I suspect you have no clue how "Republicans" feel. The Dems are throwing unprecedented amounts of money at contested districts to try and win both chambers of Congress. Hillary outspent Trump 2:1 to the tune of $1.5 Billion. Money for ads doesn't help if the message is nothing better than "Orange Man Bad!"
Ever notice how you rarely hear any platform details from Democrats seeking power? They hope to tear down the GOP candidates with character flaws and by blaming everything (including the Lindburgh kidnapping, the destruction of the Hindenburg, and JFK's assassination) on them. The best they have to offer are ambiguous, flowery descriptions of how this effort will fix a problem and that program will increase jobs, income and free shit. Blah, blah, blah. They never can offer up details on how it works. They are only focused on winning -- the details will be worked out after they gain political power. Most times, the promises never happen.
When one Dem finally does offer up a plan, it's a farfetched concoction of massive spending, massive taxation, and no idea how to execute the plan. The math never adds up. Look at ACA. It was a sick joke when Obama and the Dems in Congress launched it. But, people who believe the marketing hype refuse to think about the facts. They simply believe it must be because the Republicans somehow caused it to fail. That's the Socialist mindset. Socialism (Communism) can only succeed if there is no opposition to it. Since there is always opposition (no matter how many times they convene firing squads), they have a built-in excuse as to why their plans continuously fail.
Republicans in some districts might be nervous, but they all understand that an opportunity to appoint a Supreme Court Justice doesn't come along every year. This appointment will help shape the path of the country for generations. Plus, if they want to win their races, they need RNC support (aka MONEY). Too much to lose if they don't support the President's nominee and confirm before the election.