I expect the results will basically be known within a few minutes of the polls closing.
The early voting totals will be released and that will be an indicator of the final outcome
regardless of the actual percentages.
From another WFAA article:
Both campaigns expect to have an indication of who will win within minutes after the
polls close at 7 p.m. on Tuesday as early voting results are released.
Patrick got some good ads in at the last minute.
I hope that nasty, snarling woman in Dewhurst’s ads never gets work again. Lord, she is despicable.