Houston City Controller Annise Parker's mayoral campaign had an internal poll (.pdf) done by Lake Research Partners, and in a head-to-head with at least two other likely opponents, Parker received 29% of the vote while the other candidates received a combined 18%.
The poll also showed that more than half of Houston voters recognize her name (with no direct word on the name recognition of the other candidates). Of those who recognized her name, she had 44% favorable to 7% unfavorable, a +37 spread. That's much wider than Peter Brown's +16 or Gene Locke's +10.
Another memo (.pdf), by Randy Miller Media, commented on the results of the poll and gave a very bold statement:
Advertising and field organization are expensive in a huge market like Houston's, and Annise starts the race with significant advantages - high name recognition and a strong favorability ratio.