Yes! The merge functionality works exactly the same for Constituent records as Person records. We have two default queries that you can use on the Development: Configuration homepage:
- Duplicate Constituents shows duplicates for constituents based on individuals and households
- Duplicate Organization Constituents shows duplicates for constituents based on organizations
Alternately, you can build your own query from a Find Constituents query and follow the steps outlined in the "Query Design" section of this documentation article.