Access and store backups of the censored information
You can get a backup of the Referendum website from a Github repository, GrenderG/referendum_cat_mirror by cloning it or by downloading a ZIP file).
You can also get the most up to date information in the official Twitter account of the referendum.
The official URLs have been censored but there is large list of replicas of the Referendum website. Be cautious! They can be managed by third parties.