There will definitely be someone trying to take his place.
But I’m old enough to remember the last 7 republican presidents and presidential nominees. None of them were like Trump.
They weren’t convicted felons, or impeached twice, or telling bold provably false lies daily. They didn’t double down on their lies when called out on it.
Some of them couldn’t find a coherent sentence without two hands and a flashlight but went on to be elected for two terms, while still managing not to recommend injecting bleach as a treatment for any medical condition.
Trump has something no Republican candidate in my lifetime (and probably ever) has, blind loyalty in the face of utterly ridiculous behaviour.