Ok, let's go all in w/Heinlein and make voting rights subject to military service. Only veterans get the franchise.
As far as "Took me 30 seconds to think of two ways that could be abused to the detriment of the Republic." would such "abuse be worse then the current system wherein we have a two party system where one party thinks that stuffing ballot boxes and cheating at the polls is acceptable practice for winning elections and the other party is too bashful to bring it up. Not to mention a court system that thinks requiring "photo ID" is too great a burden for disadvantaged voters to bear.
At the rate we are losing ground it won't be long before we have no Republic to defend.
Regards,
GtG
It would be self-serving-- and wrong-- for me to agree with that.
(In Heinlein's universe, it was citizenship-- of which voting is only a small part-- that was contingent upon service. Also, there were avenues of service for civic-minded persons lacking the aptitude or physical condition for the armed forces.)
The question remains, from one Veteran Landowner to (presumably) another; how could land tenure as a condition for voting rights be abused to the point of (a) devolving the Republic into a feudal state or (b) diluting land tenure to the point where more people than now are eligible?