ck, I'm going to guess that Putin's grammar changed subjects and objects like a South African trying to do a 180 parking job shifts gears (which is very quickly, if you've ever had the pleasure of riding with a South African trying to do a 180 parking job).
"Why do they disagree on healthcare reform" should probably be "Why do [Dems and Repubs] disagree on healthcare reform," based off of "If the two parties are so similar." So, for shits and giggles, I'm going to go phrase by phrase identifying who/ what the subject/DO/IO is.
"They're only identical candidates" Romney and Obama, or as one poster affectionately called them, Rombama and Oney.
"if you have no idea what you're talking about." ckroberts!
"If the two parties are so similar" Dems, Repubs
"why do we have gridlock and such intense hatred" us!
"by the GOP of Obama?" Repubs, Obama
"Why do they disagree on healthcare reform," Dems, Repubs
"and every single major initiative that Obama has had?" Repubs, Obama
"You're full of it if you think the two parties are identical." ckroberts!
So there you have it. The quickshift of Putin33.