*** Recruitment
Note also, that you can recruit everybody. With the right skills, you can recruit CIA Agents, Policemen or Vigilantes like liberals. It is worth to keep some open subordinate slots on your founder to recruit high difficulty conservatives. The skills are :
* Persuation : The most important. It can be maxed out, by leaving the liberal talking to people without recruiting them. This consumes some real time, but gameplaywise it costs nothing. Persuation will increase, until it is maxed out.
* Religion : Helps for recruitment. It can be learned - and only be learned - by tlaking to people with higher religion than you. If the public opinion is liberal enough, you will find liberal or moderate priests at the fire station. Just talk to them for some time and your religion increases.
* Science : Helps like Religion does. It can be learned by talking to people with science, or by studying at the university. The best role to talk to is an Eminent Scientist. Unfortunately they are always conservative, so you have to bring good skills to talk to them at all.
* Buisiness : Helps like Religion and Science. It can easily trained - together with tayloring - by selling T-shirts before comiting crimes. Otherwise it can be trained by talking to people with buisiness or learn it at the unsiversity.
* Law : Helps like Religion, Buisiness and Science. It can be trained by talking to people with the skill (like Judges and Lawyers). Further you can study it at the university and it is trained if you stand trial.
In practical Law is the easiest to learn by recruitment sessions, as Liberal Judges are an actual monster class and are guarantied to be liberal, even in nightmare mode. Priests and nuns are normal civilians, who chance their opinion depending on the public mood (presumely because they are catholics, while the evil conservatives in the game are protestants), so you can do the same with them.
*** How to find a Vigilante
As Cheedows mentioned, it is useful to get CCS sleepers. Finding CCS Vigilantes can however be tricky, as they appear as other Roles. If you manage to shedule a recruitment session, you see the actual job of somebody. CCS Members have the job "Vigilante" instead of the job, they appeared to be (the same goes for professional thiefs, who are disguised as critics). There are also some other professions that change name, like "Guard Dog" becoming "Canine Hero", but they have nothing to do with the CCS.
* Hick, Redneck, Rube, Yokel and Country Boy (and Hillbilly in the beta version) are often Vigilantes. Note however, that the official name of the monster for Hick, Rube,... is "Redneck", so a recruited Hick might turn out to be Redneck -This is not the same as a Vigilante.
* A Mailman is always a Vigilante, while a Mailcarrier is an actual postal worker. This is in fact the easiest way to find a Vigilante, but it seems to be a bug, so you might want to voluntary not do this. A Car Salesman however is just a Car Salesperson if Women Rights are at C+, and never a Vigilante.
* Mercenaries (called Elite Security) may be Vigilantes. An actual Mercenary always offers the option "D - Buy Weapons" if you talk to him, while a Vigilante doesn't. If you talk to an Elite Securty, and this options doesn't show up he is a Vigilante. (True Mercenaries might not actually sell you a gun if you wear police body armour or are at a wrong location, but the option still exists)