Partners at Carlton Fields are preparing to vote next week on a proposed merger with Jorden Burt that would create a 310-lawyer firm. Talks between the two firms have been ongoing for more than a year, and the vote is considered a formality, according to sources with knowledge of the discussions,

The merger would allow Carlton establish itself in both Washington, D.C., and Connecticut. The latter is the heart of the insurance industry, which is Jorden Burt’s strength. Carlton would add a lucrative complex insurance regulatory and defense practice under the merger.