Sydney University student politics is famed for both churning out some of the country's highest profile politicians and public figures - Tony Abbott, Joe Hockey and Michael Kirby among them - but also for its unruliness.

A meeting on Thursday night upheld at least this last tradition, descending into chaos, with police called to investigate a "stolen" mobile phone and scuffles allegedly taking place as people were barricaded outside the room.

The meeting had been called to elect the executive members of the 2015 Students' Representative Council (SRC), but was shrouded in controversy after student political factions - an integral part of student politics - reneged on a power-sharing deal.

Members of Labor Right (Student Unity), another Labor faction called Sydney Labor Students and Liberal factions had attempted to stall the meeting and have it declared inquorate, because they had been locked out of a power-sharing deal by factional rivals.