After a proposal is discussed in the Governance Forum, it can be voted on using Snapshot. Voting power is the sum of held FXS as well as veFXS from miscellaneous sources. Historically, voting was done on Ethereum, but it since moved to Fraxtal (see vote). Snapshot should pick up all of your voting power sources (Mainnet veFXS, Fraxtal FXS, Fraxtal veFXS, and Fraxtal FPISLocker) EXCEPT Mainnet FXS. You would need to bridge your FXS over to Fraxtal to receive the 1:1 votes for it, or lock it in Mainnet veFXS (which has an existing balance proof system on Fraxtal).
Delegation
Due to Snapshot limitations for the Fraxtal chain, many-to-one delegations will no longer be possible. If you are either 1) Delegating or 2) Unable to access your Mainnet (delegator) address on Fraxtal, we deployed a simple 1:1 delegation contract to help.
First obtain an address on Fraxtal that you can make arbitrary calls from. It can be a new or existing address. This will be known as the delegatee address. You will need to send a cross-chain message to Fraxtal via the L1CrossDomainMessenger (on Ethereum), with the destination contract as DoubleOptInVeFXSDelegation (on Fraxtal). Below are useful addresses and function signatures: