11. Real pollsters who do mail surveys send out their questionnaires repeatedly to get a high response rate. 12. The process is different for the homeless since there are no permanent addresses to mail surveys to. 13. Doctors were randomly selected to get the mail survey , sent to 1, 000 doctors nationwide in 1998. 14. Of the 22 races Harris predicted using its novel e-mail survey , it picked the winners in 21 cases. 15. Two years ago, in a mail survey , the union found that attendance was divided between Jews and non-Jews. 16. Delta spokeswoman Emily Wharton said the move had no connection to an e-mail survey sent to some frequent fliers. 17. The return rate of 21percent was twice what some experts say is a reasonable response for unsolicited mail surveys . 18. In a U . S .-based 1970s mail survey by Shere Hite, lesbians self-reported their reasons for being lesbian. 19. The researchers also conducted a mail survey approximately one year after the lottery and conducted in-person interviews and physical-health exams. 20. Warrington WA1 is one of the ten best districts in England to live in, according to a Royal Mail survey .
