Make an effort to talk to some fellow owners, neighbours or people you see around the building in advance of an annual general meeting. Who is sensible and on your wavelength? Ask if they want to nominate for the executive committee.
Ideally, attend a few executive committee meetings beforehand and see how the current committee handle themselves – especially if a tricky question arises or a disgruntled owner appears. Off-line ask both sides exactly what the issues are, where and what are their facts and sources.