You must vote in the Democratic primary to qualify to participate at the state convention in Dallas. The Grayson County convention is Saturday, March 22, in the third floor Assembly Room, from 10:00 am until 12:pm.
For a complete list of primary candidates, please go to
http://www.txdemocrats.org/press/texas-democratic-party-fields-a-diverse-slate-for-office-in-2014