with these rules:
http://www.txdemocrats.org/IssuesPlatforms/rules04.pdfIf you have any questions, contact your SDEC person for your senatorial district.
In a nutshell... here's what happens:
You sign in your presidential preference just as you did at your precinct convention. The preferences are then broken out by percentages. The preference percentages are applied to the total delegates your SD gets to the state convention. Each preference caucuses and nominates its delegates it wants to go to the state convention and reports these to the nominating committee. If once the percentages are applied and there are and there are any "remainder" as a result of rounding, those delegate spots become "at large" and the nominating committee recommends names as part of its report.
Keep in mind the nominations committee only recommends but the convention must accept as written, or amend, or throw out completely but then vote on the final slate of delegates to the state convention. Generally, the convention routinely ratifies the nomination committee's report.
In many senatorial conventions, the way things have been in recent years, just about anybody that wants to be a delegate becomes a delegate because there often are not as many people at the senate convention as the senate district gets delegates to the state convention.