Unemployed folks, and those who are not job-dependent, therefore can seriously skew the system.
Unless you can magically alter the laws of nature, I fail to see how this can be fixed.
This isn't a 'skewing', it's part of the system.
A political movement that ALREADY has lots of members obviously doesn't need much of a volunteer effort or even a donating effort.
Being able to harness the efforts of a small band of dedicated followers or wealthy donors allows unpopular viewpoints to get heard, too.