who controls the Republican Party?

[dead0man]

go

[Amenhotep Bakari-Sellers]

The Koch bros bought and paid for we had surplus with 35 percent Corporate taxes and now we have deficit with 20 percent Corporate taxes

[Unpoisoned Chalice]

Business interests are the driving force of the GOP. While the nature of these business interests and the political fortunes of the Republican Party have shifted greatly over time, the preceding statement would be true from the party's founding to today.

[Vice President Christian Man]

Trump

[Rat]

Conservative media pundits and hosts. Sean Hannity, Candace Owens, Tucker Carlson, etc. These people drive the messaging for the rest of the movement and party.

[Fmr. Pres. Duke]

Trump controls the party along with his band of conspiracy theorists. Wall Street typically gives more to the Democrats than the Republicans nowadays.

[Mr. Smith]

Big Media.

Not sure if that counts as Big Business or not.  I mean why not consider The Military Industrial Complex part of Big Business then?

[sting in the rafters]

[Pericles]

Big business controls Republican politicians. Republican politicians do not control their voters though, they don't seem dominated by a clear faction since groups like the evangelicals that we see as powerful actually pick the loser in most presidential primaries.

[Ferguson97]

Their moronic base, which is #1 and #5

[President Johnson]

#5 controls most of the party, #2 controls a majority of elected officials.