Political alignment doesn't really come into it on the promotion side. Most of the time we don't even know if someone is left/right wing because they only comment on football related stuff and we generally don't go trawling through their post histories before giving a like. If we were against anyone right wing, Colin and Erica wouldn't be here today.
A lot of forums don't have a newbie system but they do have a 'swing' one way or the other
RedCafe
Poll
Remain: 73.8% (482 votes)
Leave: 26.2% (171 votes)
The Liverpool Way (Liverpool FC fan forum)
Poll
Remain: 80.7% (222 votes)
Leave: 19.3% (53 votes)
Red and White Kop (Liverpool FC fan forum)
Poll
Remain: 66.5% (574 votes)
Leave: 16% (138 votes)
Don't know: 7.9% (68 votes)
Not voting: 9.6% (83 votes)
Grand Old Team (Everton fan forum)
Poll
Remain: 64.6% (512 votes)
Leave: 35.4% (280 votes)
Wearside Online (Sunderland fan forum)
Poll
Remain: 11% (4 votes)
Leave: 74% (26 votes)
Don't know: 14% (5 votes)
Onefootball (UK football forum)
Poll
Remain: 64% (112 votes)
Leave: 36% (63 votes)
Digital Spy (Entertainment forum)
Pre-vote
Remain: 36% (431 votes)
Leave: 63% (761 votes)
Exit poll
Remain: 26% (85 votes)
Leave: 73% (241 votes)
These are the closest:
Bluemoon (Man City fan forum)
Poll
Remain: 47.9% (503 votes)
Leave: 52.1% (547 votes)
Football Forums
Poll
Remain: 47% (55 votes)
Leave: 53% (62 votes)