Actually, I think it's per ticket with no reference to the time period.
If the ticket takes 1 month to vote, then it also happens to be per month but you can't know that.
It has 50% chance to vote within a month and must vote within 6 months ore expire.
This is a return of currently 2.34 percent. With continuous buying, this value works out to be return per month. With at least ~100 tickets you can expect to see this return each month. Fewer tickets will still average to this value each month over time, but you will see increased variation on a month-to-month basis.
is anybody smart enough to figure this out if the above statement is correct?