If we’re still using some form of democracy after we’ve developed functional immortality, we could consider having the power of an indivuals vote decay assymptotically to zero with time, to off set the fact that they’ll have had more time to accrue other kinds of influence. This way we still give the next generation space to breathe. Also, if we reproduce at replacement levels (each person only making 1 more person in the course of their life times) the population will only grow linearly with time (assuming death rate=0, laughable, really), which is much more manageable than the exponential malthusian cluster fluff that would happen eventually at reproduction above replacement.
