Each individual stake has a voting weight that is calculated daily for every staked account on Libre chain.
This is called "voting power" and it is calculated based on the remaining days left in a stake up to 1 year.
The formula is here:
If you have 1000 tokens and you have 365 days remaining, your voting power will be 2000.
If you only have 10 days remaining, your voting power will be 1027.39726.
This formula is implemented in the open-source taking contract and cannot be updated without a hard fork of the code.