The rout I do not doubt. Some policies executed on the way are troublesome.
Bidding for the center with liberal policy may make a larger party, but the right wing on which I sit will crumble from underneath. Y'all can have your liberal Republican Party. I'll find other vehicles for conservatism.
(BTW - If you wish to attack, please justify the $2,000,000,000,000.00 Medicare Drug Entitlement for Rich People. Otherwise, I'm ignoring you.)
You win those people to the GOP forcing the Dems to come further to the middle/right to get them back... the whole spectrum shifts to the right. This has been happening for a couple decades now since Reagan. Spending has gone up (so has the GDP) but taxes have gone down, business restrictions down, concealed carry gun laws spreading everywhere, abortion attitudes have shifted greatly to the right, etc, etc. The GOP is winning by being smart with the field they have been dealt. Being radical isolationists does nothing for anyone.