It exists, it makes up about 15-20% of the GOP base, which is 30-40% of the population of the US.

245 million adult voters * 0.3 GOP * 0.15 = 11 million people conservatively.

They are loud so you hear a lot from them on social media, but like I said, they are an extreme minority in their own party so they are effectively powerless and have like 1-2 senators they like. They're about a third in size of the radical left probably, who also only have 1-2 politicians they kinda like in all of the establishment. The radical left however doesn't vote very often or involve itself very much in domestic politics on the governmental level.