I understand your concerns about this. This is how CCP has it set up.
Topic Presentation and Management by the CSM
Anyone with the right to vote can start a topic on the Assembly Hall, which is a forum on the official EVE-O website, and comment on any number of existing topics. Moderation rules for posting in the CSM section of the forums are the same as all other boards in MyEVE. In addition, voters are also provided with the technical means to indicate their support of a topic. Players may support any number of separate topics, but may only support each topic once.
A topic can be anything that a player considers important. The goal is to either gain the support of a Representative, or gain a 25% public support level on the issue from the number of voters of the last election. If either of these conditions is met, the topic must be addressed by the CSM. Regardless of the support method, topics cannot be adopted by the CSM unless they have been open for community discussion for at least seven days. This includes the act of a Representative putting forth a topic, as he or she must present the topic to the voters and cannot bring it forth to the Council unless it has been up for seven days or more.
Upon reaching the CSM, all topics must be discussed by Representatives and voted on to determine if escalation to the CCP Council is necessary. A simple majority vote is required for passage. Topics which do not pass this vote must be accompanied with a summary explaining why. Time is the only constraint to the number of topics that can be voted on.
This is the link to everything about the CSM from eligibilty to voting for CSM members and also the term lengths, basically everything:
http://wiki.eveonline.com/en/wiki/Wh...te_Eligibility