It's kinda basic really.. Jefferson proposed that if you own property and pay property taxes, you can vote, run for office, be a judge, etc. Un-propertied tradesmen that had no property (land) also paid no taxes (back then there was no such thing as 'income tax') and therefore they had no rights to the franchise.. ie, no voting rights; can't run for or hold public office, etc. At least as far as I can recall, that was Jefferson's take on it.. I may be off the mark; been 45 years since my Civics class.
Mav's spin on it is based on service to the Nation rather than property ownership/taxpayer status.. serve the nation for 3 years, then you can vote, hold office, etc. Decide not to serve, no onus.. but no right to vote or hold office.