Well, if you can show me where I promoted a false equivalency I’d be impressed. If I were American I’d be voting Democrat every time, barring some monstrous blue dog jerk - at which point I don’t know what I would do. At least in Canada we have a couple of choices - though at present that split of choices has given us a version of Bush II with brains enough to hide the evil.
I actually think your best bet is an intra-party takeover. The model exists - the hardcore Xian right quite explicitly and deliberately sought to infiltrate and take over the Republicans, and were successful enough to drive the agenda. If you guys take over the Democratic Party you might have a chance - the Repubs are too far gone.
Right now you have politicians hopelessly enthralled with monied interests. That will take a long, hard fight to change (and probably a different Supreme Court), but it is possible. It won’t happen without a party takeover though. As long as the easy route to election is to pander to irrelevant ‘moral’ issues while taking cash from the powerful, it is going to be what happens. You need a reboot, but I don’t really know how to do that in your context, only in Canada (and we got one, then the Conservative party killed it).