Every Stack Exchange site will eventually end up with a different "base level" of voting --- that is, the expected number of upvotes for a question of a given level of excellence. (This effect occurs because people see a good question, but already with a certain number of votes, and think "oh, I would have upvoted this, but it already has enough".)
I'm not sure if it's what's happening lately, but it would seem there has been very little voting going on since the last few days. When you see a good question or answer, vote it up!
Otherwise, we won't end up with enough high reputation users:
Does your site have a healthy middle class of users with vote up and down, and edit tag privileges? Does it have a healthy governing class of users with edit, close, and moderation privileges? All of this requires sufficient reputation, which in turn requires users to exercise their right to vote.
Our sites are all intended to be a sort of representative democracy. While yearly moderator elections are an important part of that plan, voting on questions and answers is the primary mechanism through which the community governs the site on a day to day basis.
We only have four users with the Suffrage badge right now. We need more!