Left/Right

"Before the 1890s, there was no formal party system in South Australia. Party labels before that time indicate a general tendency only." Does anyone know what "general tendencies" the governments before the 1890s had, and if so is there a way to indicate this in the article without referring to them as Labor/Liberal (for obvious reasons) or "left" and "right"? I'm not sure myself but would be quite interested to find out and indicate them in a meaningful and correct way.