Texas has 228 Democratic delegates in the presidential nomination race. They are awarded through primary voting, caucuses and other ways. Here's how it works:
A total of 126 pledged delegates are awarded proportionately based on March 4 primary voting in 31 state senatorial districts. Each senate district's delegate count is based on Democratic turnout there in the 2004 and 2006 general elections, so not every district has an equal number.
Hillary Clinton won that stage of the Texas contest with 65 delegates to Barack Obama's 61.
Forty-two at-large pledged delegates are awarded based on caucuses beginning with precinct conventions on election night and continuing to county and senate district conventions March 29 and the state party convention in June.
Using a math formula, delegates are awarded at the caucuses according to a candidate's share of supporters present. At each level, the candidate with more supporters attending benefits most.
Twenty-five pledged party and elected official delegates are named at the state convention based on the series of caucuses, ultimately determined by the percentage of presidential candidate support indicated when convention-goers sign in at the state meeting.
There are 35 unpledged delegates: 32 so-called superdelegates, including members of Congress and leading party officials, and three others the state chairman appoints.
Sources: Texas Democratic Party; Texas House Research Organization.
Copyright 2008 The Associated Press.