If any elector, before or after entering the voting booth, shall ask for instructions concerning the manner of voting, a poll officer may give such elector such instructions; but no person giving an elector such instructions shall in any manner request, suggest, or seek to persuade or induce any such elector to vote any particular ticket or for any particular candidate or for or against any particular question. After giving such instructions and before the elector closes the booth or votes, the poll officer shall retire and the elector shall immediately vote.