In my last two posts, I looked at what a Green surge would mean for the NDP in two scenarios. One where the NDP does as well as they were in April 18th polls, and a second where they did as poorly as in the 2013 election. Both analyses suggested that a Green surge would have a limited impact on the outcomes of the election. The NDP would lose some seats on Vancouver Island, but unless the vast majority of the increase in the Green vote comes as a result of NDP defections, in neither scenario do the Liberals pick up a substantial number of seats. This is not to say that a Green surge cannot contribute to a Liberal victory, but rather, that it will only do so if the election is already very close. Potential strategic voters should be aware of this when deciding how to approach this election.
The first danger that the NDP faces is that the Green party will win enough seats to deny them a majority in spite of a win over the Liberals. The previous posts suggest that this is unlikely to happen. Neither suggests that the Green party is likely to take more the 10 seats (all on Vancouver Island from the NDP). Indeed, most election forecasters would likely be surprised if the Green party managed to take that many. Yet, only three times since 1945 (1952, 1979, and 1996) has the difference between first and second in a BC election been less than 10 seats. One of those elections, in 1952, used a different electoral system and another, in 1996, saw the party with the second most votes win the most seats. BC’s first past the post system tends to give whichever party wins the plurality of the vote a healthy advantage over the second place party. If the NDP defeats the Liberals by a substantial margin, it is unlikely that loosing a handful of seats on Vancouver Island will prevent them from forming a government.
It is also worth considering the danger that voters switching to the Green party will allow the Liberal party to win seats by splitting the anti-Liberal vote. The last two posts suggest that, while this certainly matters in some ridings, defections from the NDP to Greens are unlikely to affect the outcome of most ridings. Where the Greens are strongest, on Vancouver Island, they tend to be stronger than the Liberal party. In most ridings on the Island, defections from the NDP to the Greens are more likely to a Green victory than a Liberal one. Many seats off the Island are either safe Liberal or NDP seats. In safe seats, the gap between the two parties is too large for a surge in Green support to take enough votes from the NDP to give the Liberals the riding.
It is important to note that in highly competitive seats, particularly those that the NDP are trying to take from the Liberals, a Green surge may end up costing the NDP seats. There is thus some merit to anti-Liberal strategic voting in some parts of the province. Anti-Liberal voters in ridings that have historically been close, or where it looks like a New Democrat might be able to unseat a Liberal, should consider backing the NDP. It is unlikely, however, that most voters live in those kinds of close ridings. Anti-Liberal voters in safe ridings should not be concerned that a vote for the Green party will hand the Liberals an extra seat.
There are two important points from previous posts that should be highlighted. The first is that the election needs to be very close for the growth in Green support to have an impact on the result. It is very possible that it will be that close. The NDP have only won the popular vote in the province twice (in 1996 they won a third election despite losing the popular vote). Even though they are leading in the polls, the NDP has to deal with the fact that they are fighting an election in a province where historically most voters have supported other parties. This does not mean that one should discount the likelihood of NDP victory, but one should also not be surprised if the election ends up being closer than the polls currently predict.
The second important point is that strategic voting is a lot less likely to have an impact on the election than is often assumed. In certain, very competitive ridings, strategic voting can affect which party wins. In a large number of ridings, however, the margins between the two strongest parties are simply to big for strategic voting to change anything. In these ridings, anti-Liberal voters ought to back the party they prefer regardless of which one is stronger. They should pay careful attention to the competitiveness of their ridings when deciding whether or not to vote strategically.