Section 17-15-3

Voter must answer as to his qualifications.

Any person examined as a witness may be required to answer if he voted at the election contested and to answer touching his qualifications; and if he was not at such election a qualified voter, he may be required to answer for whom he voted. If he makes full, true answers which may tend to incriminate him, he shall not be prosecuted for voting at such election.

(Code 1896, §1669; Code 1907, §457; Code 1923, §547; Code 1940, T. 17, §233.)