Can't figure out... How to get block producers votes on some past date? From cleos preferably :) By default it returns latest data, while i need it for let's say - yesterday or a week ago. Or can i derive this votes from blocks/transactions data extracted with mongo_gb_plugin? I have all data extracted into database.
Current state which is accessible to dApps is stored in RAM. This is for best performance.
Past state which is not needed by dApps is only in the log. There are several plugins which help save the log data to a database for easier and faster querying of the historical data.
You need to set up a node with a plugin that suites your needs and wait for it to sync with the main net. Then you can query any info you're interested in.
It is recommended to filter the info you want to be collected in the database so it is not too big.