Primary Election – May 29, 2012
Primary Runoff Election – July 31, 2012
General Election- November 6, 2012
| September 12, 2011 | First Day to File for Precinct Chair for 2012 | |
| September 15, 2011 | CEC Meeting to receive precinct chair applications and sign judicial candidate petitions | |
| October 11, 2011 | Voter Registration Deadline for City of Houston Elections | |
| October 24 – November 4, 2011 | Early Voting in City Elections | |
| November 8, 2011 | City of Houston Elections | |
| November 28, 2011 | First Day to File Applications for Place on Primary Ballot (other than precinct chairs) | |
| December 15, 2011 | Filing Deadline for 2012 Elections | |
| December 20, 2011 | CEC Meeting to Draw for Ballot Position (and Senate District Caucuses) | |
| April 21, 2012 |
Senate District Conventions | |
| May 29, 2012 |
Primary Election | |
| June 7-9, 2012 | Texas Democratic Party State Convention (Houston) | |
| July 31, 2012 | Primary Runoff Election | |
| September 3-7, 2012 | Democratic National Convention (Charlotte, N.C.) | |