because it causes members to start fighting and gives the mods extra work

but most importantly, it is in the guidelines because we had a referendum here on NT during the last election period and NT members themselves voted to limit partisan political posting as it was causing too much strife and detracting from the purpose of these forums. For some people with serious health issues, the last thing they want is to come onto these boards and find it a battleground.

Here are the guidelines http://neurotalk.psychcentral.com/showthread.php?t=1293
and specifically