That’s what the NRSC is for; to re-elect Republican Senatorial incumbents. If you don’t want your money going for that, don’t send them any. Find a primary candidate, and send your money directly to support that person.
Drown in Kool-Aid much?
The NRSC is intented to elect as many Republican Senators as possible, whether they are incumbents or not. Only a pathetic dupe would believe otherwise.
And obviously I don't give them money -- I only care about electing Republicans if they are likely to advance the country in a conservative direction.