Post information on city affairs.
Spread the word about hearings, town hall meetings, community consultations and the like.
Attend such meetings.
Share personal experience, references to informational sources and present personal opinions connected to relevant facts.
Address the opinions and information provided by others with respect, especially when in disagreement.
Address the members with respect for their motives and the intelligent value of their contributions.
Invite people you find in other parts of tribe making contributions of value to join the group.
Especially invite people whose opinions differ from your own, but who have offered up contributions you have found valuable.

http://tribes.tribe.net/oaklandpolitics