I truly hope it has not become a Republican site. Conservatism has always been the core of FR. If it becomes a party line parrot echo chamber, then it will tragically degrade, and it really is a great site.
It will never be a Republican site. Every election cycle, Prince Reibus dispatches his flying monkeys here to cajole and brow beat conservatives who refuse to toe the GOP ("Give Obama Power") statist Party line. These Trolls often out themselves after they are strongly responded to; they get frustrated and snarky.
Hopefully after the election, they'll slink away for a couple years until the next cycle.