R.I. Gen. Laws § 17-19-4: Voting booths and optical scan precinct count units — Number to be furnished.

(a) For each voting district and for each town not divided into voting districts, at least one precinct count unit shall be prepared and delivered by the state board or its designee.

(b) At each voting place, both in cities and in towns, at least one voting booth shall be furnished for every one hundred seventy-five (175) qualified electors, whose names are upon the voting list used at the voting place and entitled to use the machines, as certified to the state board based on the voting list certified as a result of the final canvass.

(c) In making the calculation required by this section, voters whose names are on the inactive list of voters shall not be included.