In Strachan v. Lanier, 867 S.W.2d 52, 53 (Tex. App.-- Houston [1st Dist.] 1993, orig. proceeding), the court looked to the purpose behind requiring each signer to list his or her address and voter registration number and concluded that "the absence of a city and zip code designation, alone, does not invalidate a signature on a petition." Strachan, 867 S.W.2d at 53. In reaching this conclusion, the court stated "we are to take into consideration the entire petition when determining whether the residence address information for a signer is sufficient." Id. at 53 (citing Fitch v. Fourteenth Court of Appeals, 834 S.W.2d 335, 337-38 (Tex. 1992)(orig. proceeding)).