"Independence referendum" refers to a vote or poll taken by the people of a particular region or country to decide whether they want to become an independent nation, separate from their current government or country. Full definition
Following the failed Scottish independence referendum in 2014, the party wanted to personalize its message, and harness its limited but growing grassroots support. (businessinsider.com)
The SNP is likely to use the election to win a new mandate for a second independence referendum in 2019. (blog.politics.ox.ac.uk)
It just meant you didn't think there was any need for a second independence referendum right now, not that you were against the notion per se. (totalpolitics.com)