If voting machines are installed gradually they may also be introduced in the case of counties by legislative districts with priority in installation being given to municipalities therein in the order of their descending population rank according to the last official decennial census. Within such municipality the voting machines shall be introduced in numerical order by wards and election districts, if any, so that they will first be used in the first election district of the first ward and then in the second election district of the first ward and so on. After they have been installed in all the election districts in the first ward, they shall be installed in the same manner in the second ward, then in the third ward, and so on.
Such question as to the discontinuance of the use of voting machines shall be submitted in the following form:
"Shall the use of voting machines be continued in the (city, borough or township), of ............?"
25 P.S.§ 3004