2. There is the mixed-member proportional (MMP) option. This is the electoral system used in Germany and New Zealand and some other countries. There are some slight differences on the exact form of MMP, but basically under an MMP system there is a constituency vote and a party vote just like under the previous electoral system in Thailand.  However, the party vote is more important than the constituency vote as it is the percentage of party votes which determines the share of all seats a party wins. Therefore, in countries with MMP, electoral campaigns are predicated on parties trying to maximise their party vote. For example, if there are 100 MPs with 50 constituency MPs and 50 party list MPs and then Party A win 10 out of the 50 constituency MPs, but 40% of the the party vote. Party A will get 30 party list MPs to give it 40 MPs in total (by virtue of getting 40% of the party vote Party A is entitled to this top-up of 30 party list MPs to ensure its total percentage of MPs match its percentage of the party vote).  There are some ways to game MMP – see the “collusion” part on the Wikipedia page for some examples.

One other point to note is that there is often a threshold under MMP. The threshold varies between 3%-5% or winning a constituency seat(s). This means if the threshold is 5% and a small party wins 4% they will get no seats.

Now, given that the pro-Thaksin party has done better on the constituency vote than the party vote (by better on constituency vote, BP is not referring to %, but by the total number of seats won). For example, in the 2011 election, Puea Thai won 44.94% of the vote for the constituency vote, but won 204 out of 375 seats. Nevertheless, because Puea Thai still did quite well in the 2011 election on the party vote (they won 48.42%). At first glance, this may not appear to translate into a majority, but because there would be a threshold and some of the smaller parties wouldn’t meet this threshold, Puea Thai still would have won around 50-53% of all seats which would not have change the result.

BP: At the time, BP didn’t calculate based on the 2011 election results, but below are some charts from Excel using the Sainte-Laguë method of calculation showing how many seats the parties would win under MMP based on their votes in the 2011 election system: