Mark Levin is a prominent conservative commentator. So his opinion will influence others.
No the world isn’t on pins and needles about Levin’s opinions, but some people listen to what he has to say. Ditto Hannity and Laura Ingraham , and folks on talk radio such as Mike Gallagher, Clay & Buck, Jesse Kelly, and others.
The opinions expressed in the conservative media will influence people.
Levin thinks he won the debate, but does that mean he has his full support for the nomination? He really does a yeoman job defending Trump.