The two parties are the same. McCain would've had a similar bill, with all of the GOP voting for it, and Dems opposing it because itmight bolster GOP popularity. Both sides want more revenues, both sides want more control, both sides want majorities, both sides want more popularity (and thus job security), both sides have voted to change election rules to make 3rd parties less likely to succeed, both sides continue to allow anti-Constitutional policies and Departments to continue... not too many differences there.
The vote, and I repeat, was 256-257 combined House and Senate Republicans AGAINST the bill and not one single "conservative" Dem. There is no such thing, and you sir/madam are absolutely drinking kool aid if you think McCain would have had a similar bill---as bad as he was.