Electoral Systems and Number of Polling Days
FPTP, AV, BV, SNTV, List PR, Borda Count, and STV all generally require just one election on one day (though the size of India’s FPTP elections require that they be held over a period of four weeks), as do Parallel and MMP systems. Two-Round systems are more costly and difficult to administer because they often require the whole electoral process to be re-run a week or a fortnight after the first round.
