Don't worry about the Repubs, they'll be just fine.
There's a difference between people on the internet and the actual voting population (not to mention the actual political organizations.)
The first group doesn't actually do anything political because they hate the government and the way that it works.
The second group, the over 65ers and rural people that don't spend all their time on the internet blogging about how they hate the government, don't have to pay for anything so they don't really want to get rid of their own benefits by stopping everyone else from paying for them.
and the last group -ha! what a great platform to run a candidate under, breaking-down government: Vote for me and I'll cut my salary and get rid of all the other jobs for my fellow party members. Yeah, that'll happen...