The so-called “conservative movement” has failed largely because it has been taken control of by warmongering neo-con artists, who are just recycled Trotskyites who moved from the democrat party to the republican party. They have managed to con way way too many republicans into believing that never ending wars in the Middle East is a “conservative value”, while they themselves support all the liberal social policies of their native democrat party, such as: open borders, abortion, gun control, affirmative action, hate-crimes legislation, political correctness.
If you want to see who is responsible for pushing the republican party ever leftward, look no further than to the neo-con artists who are now the foaming and frothing at the mouth pushers of the #nevertrump bunch.
The essence of Conservatism is Nationalism, which has long ceased to be part of “Conservatism.”