Description

The last day you can register by mail to vote in the primary is August 7th.

By mail:
Your application must be submitted by the 5th day before a primary (OR received by your Registrar of Voters by the 5th day before a primary).

In person:
Though you can apply in person to your town clerk or registrar until 12:00 noon on the last business day before a primary, which would be August 13th for the primary on August 14th.