Beware the unintended consequence of shallow thinking.
They might oppose a millage, pass out literature and information about proposed spending by their local governments. Some might simply try to engage their neighbors in a campaign process through simple means. They might try to encourage certain priorities as well, and may do so by only spending a few bucks at the local copy mart.
All of this free speech is protected, right? In fact, such expression is legally permissible without a legal regimen, allowing up to $1000 to be spent currently. Candidates for public office, as well as ballot advocacy groups can opt out of reporting requirements if they do not reach that $1000 spending threshold.
However, as long as there are men occupying government, this too can change.