Balance poll tallies using normalization

[domi41]

Something like PollTally.BalanceWithNormalization()

There are at least two ways of attaining balance through normalization.
Please suggest other ways if you know of some.

Using Least Common Multiplier (LCM)

Would require math/big and some refacto of int types and arithmetic operations. And LCM utilities.
Considering putting such a heavy change in a fork, or a branch perhaps?
What's the proper way for this kind of thing?

We can't easily do both methods since math/big needs to be in our structs and core arithmetic as well.

Using floating-point arithmetic

Pragmatically, it should work OK in most cases. Or will it?
We don't like it, though, since floating-point arithmetic is notoriously unreliable.

This would also require a change of int types.

Using fixed-precision floats as ints ?