It's true that there are conspiracy loons on the left too. But to get a glimpse of the genuine 200-proof article, you really have to hang out at the right wing taverns. There's just nothing to compare.
To be fair, one can find the genuine 200-proof article hanging out at the left wing taverns too. However, such people are completely marginalized by our media when they are on the left and when they're on the right they have their own television shows and major positions at prominent think tanks and full access to the liberal media to push their crazy new books, etc...
To be fair to conspiracy loons of all types, sometimes they're on to something...