What went wrong with the Republican party?

You have to go back more than 10-20 years ago. Reagan's second term was pretty much ended the Republican party. As his initial appointees resigned they were replaced under the leadership of his vice-president and Reagan himself became more of a figurehead for people working behind him. That's when the party began to slide into the camp of the NWO and Bush, now President, was the first to use the term, New World Order, and with the exception of Trump, every President since then has signed on to the concept. The DC dog & pony show became more like courtroom attorneys, arguing before a jury, and then drinking beer together at the end of the day. Our congress-critters pulled the levers and worked the smoke and mirrors of a supposed two party system, but all the while sliding us toward the NWO end game. Then along came Obama, the biggest puppet of them all and conservative Republicans reacted with the Tea Party.
There's an old saying in the sales world that you should give a customer two choices, both of which are favorable to the salesman, like, "Will that be cash or charge?" or "would you like the large or extra large?" We've had the same thing in politics. The RNC and DNC are 'owned' by the same people and they decide who the best two candidates should be - both of which of course are willing to commit to their agenda. Trump screwed that up royally. We were supposed to get the choice of Jeb Bush or Hillary but Jeb Bush couldn't win a primary in his home state, and most people paying attention knew that Hillary really was 'crooked' as Trump claimed.
So Trump slid in and messed up their agenda. Kerry and Hillary had both played a hand in developing the UN's 2030 agenda, and if you haven't read that I suggest that you do ASAP. The goal is a one world gov't, ruled by the UN, and based on the "China model" or in other words, a police state.
As a result, the Democrats HAD TO win this last election by any means possible. They're already four years behind and major players have mounting evidence of their collusion and subject to indictment.
By the way, part of that agenda is curtailing pandemics by vaccinating everyone world wide. I think it's a little scary that the same people that have been telling us for 20-30 years that the biggest problem in the world today is over population are now telling us, with their best used car salesman smile, that vaccinations will save millions of lives each year.