WTF? Where did you come up with that. Ted OLSON was the lead on that and Ted Cruz was just one of many staffers.
Cruz assisted in assembling the Bush legal team, devising strategy, and drafting pleadings for filing with the Supreme Court of Florida and U.S. Supreme Court, the specific case being Bush v. Gore, during the 2000 Florida presidential recounts, leading to two successful decisions for the Bush team.
https://en.wikipedia.org/wiki/Ted_Cruz