What is a ‘DMP’ electoral system?
How would it work on PEI?
Why is it the ideal model?
Anna Keenan - anna.c.keenan@gmail.com - (902) 621 0341�Submission to Democratic Renewal Committee
DMP means...
Dual Member - Each voting district is represented by � 2 local-candidate representatives
Mixed - Blends 2 voting principles: local plurality (popularity); � overall proportionality (representativeness)
Proportional - The overall result is proportional, so if 45% of � Island voters choose the ‘Cat Party’, the Cats � gain 45% of the seats in the legislature.
What are the weaknesses of other electoral systems?
First-Past-The-Post (FPTP) ignores many voters.
In FPTP, very large numbers of voters - often a majority - are politically disenfranchised. There is no theoretical upper limit.
In Canadian Federal elections from 1980 to 2006, an average of 49% of votes were ‘wasted’ - having no influence on the district results, or the overall composition of the Federal legislature. � (Ref: The Politics of Voting, Dennis Pilon)
Disenfranchisement drives cynicism about the importance of voting, and leads directly to citizens ‘Voting Strategically’, instead of voting for their party of choice, which most closely matches their values.
This disproportionately favours two major parties, and excludes minority voices.
First-Past-The-Post (FPTP) ignores many voters.
vs
First-Past-The-Post (FPTP) ignores many voters.
54% of voters in the last PEI election had their votes ‘wasted’.
That is, the election result would have been exactly the same if they had not participated at all.
First-Past-The-Post (FPTP) ignores many voters.
Only 46% of voters in the last PEI election got the local representative they voted for.
Proportional Representation (PR) is the ideal...
Every citizen’s vote counts equally - the composition of the legislature matches the values of the broader public.
‘Wasted votes’ are minimised. Voter cynicism decreases, strategic voting disappears.
Higher diversity within parliament means parties need to learn to cooperate. Civility in politics increases, partisan polarisation and ‘negative campaigning’ reduce dramatically.
80 countries around the world already use some form of PR.
… but specific PR models have issues
… which stop some people (even those who dislike FPTP) from supporting positive change.
MMP Mixed-Member Proportional
STV Single Transferable Vote
Concerns with specific PR models often leads to consideration of the “Alternative Vote” (AV)...
… but this is a distraction from the true goal: Proportional Representation.
a.k.a. “Instant Runoff” or “Preferential Voting”
DMP is a newly-designed PR model
with many advantages
So how would DMP work on PEI?
The example in the following slides uses the following assumptions, which I would recommend if DMP were to be applied in PEI:
27 Districts currently
Per district: ~3000 voters, 1 MLA�
.
14 Districts in DMP
Per district: ~6000 voters, 2 MLAs
*NB: this map is for illustrative purposes only. Elections PEI would need to determine new boundaries under DMP.
The ballot paper would look something like this…
Parties may nominate up to �2 candidates per district.
Independent candidates may also run.
When a party wins 1 of the 2 seats �for this district, only their first-listed candidate is selected.
1st seats per district are simply allocated by plurality
14 DISTRICTS | 1st Seat | 2nd Seat |
A | PC | ? |
B | LIBERAL | ? |
C | PC | ? |
D | PC | ? |
E | LIBERAL | ? |
F | LIBERAL | ? |
G | LIBERAL | ? |
H | LIBERAL | ? |
I | LIBERAL | ? |
J | PC | ? |
K | PC | ? |
L | LIBERAL | ? |
M | LIBERAL | ? |
N | LIBERAL | ? |
So, the most popular candidate in every district joins the legislature. Yay!
Half of the 28 seats are now allocated.
In this example, using real data from the 2015 Provincial Election:
To complete the legislature, each district will also be represented by a second local candidate.
The 2nd seats are allocated to make the province-wide outcome truly proportional.
| GREEN | LIB | NDP | PC | TOTALS |
PERCENT OF POPULAR VOTE | 10.8% | 40.8% | 11.0% | 37.4% | 100% |
WHOLE # SEATS DESERVED | 3 | 11 | 3 | 10 | 27 |
REMAINDER | 0.02 | 0.43 | 0.07 | 0.47 | 1 |
TOTAL SEATS TO BE ALLOCATED | 3 | 11 | 3 | 11 | 28 |
1st SEATS ALREADY GRANTED | 0 | 9 | 0 | 5 | 14 |
2nd SEATS REQUIRED | 3 | 2 | 3 | 6 | 14 |
“For a proportional result, we now need 3 Greens, 2 more Liberals, 3 NDP reps, and 6 more PCs.”
*This example uses real data from the 2015 Provincial Election
But which districts should those 3 Greens, 2 Liberals, 3 NDP reps and 6 PCs come from?
Parties are assigned their deserved seats where they have had their strongest relative support. In most districts, the 2nd-most-popular candidate will be elected.
In most districts, there will be local representatives from 2 different parties.
“My district, B, is represented by a Liberal AND a PC! They were our district’s first and second preferences.”
But which districts should those 3 Greens, 2 Liberals, 3 NDP reps and 6 PCs come from?
*Uses real data from the �2015 Provincial Election. �Full details available on request
“My district, B, is represented by a Liberal AND a PC! They were our district’s first and second preferences.”
14 DISTRICTS | 1st seat | 2nd seat | District rank of 2nd seat |
A = 1+2 | PC | NDP | 4 |
B = 3+4 | LIBERAL | PC | 2 |
C = 6 . | PC | LIBERAL | 2 |
D = 5+7 | PC | LIBERAL | 2 |
E = 8+9 | LIBERAL | NDP | 4 |
F = 10+11 | LIBERAL | GREEN | 4 |
G = 12+13 | LIBERAL | PC | 2 |
H = 14+15 | LIBERAL | NDP | 3 |
I = 16+17 | LIBERAL | GREEN | 2 |
J = 18+19 | PC | GREEN | 4 |
K = 20+21 | PC | PC | 3 |
L = 22+23 | LIBERAL | PC | 2 |
M = 24+25 | LIBERAL | PC | 2 |
N = 26+27 | LIBERAL | PC | 2 |
What is the one weakness of the DMP model?
In a minority of districts, the 2nd-seat representative will not be the “2nd most-preferred” local candidate. Instead, a minority of districts will be represented by their “1st and 3rd” or “1st and 4th-ranked” candidates.
However, this is a relatively minor issue for two reasons:
What is the one weakness of the DMP model?
But I feel OK about that, because this district’s votes for the PCs contributed to them winning the second seats for Districts G and K.
And the NDP won the second seat here in District H fairly, because they had support of 11% of voters spread across the Island, but their vote was relatively stronger here: 21.5%
Hmmmm. We in District H have a Liberal and an NDP representative, even though the Liberals and the PCs were the most popular parties locally.
Some interesting side-effects of DMP...
Unless one party has a super-majority, most districts will end up with representatives from two parties, rather than just one. This encourages local-level inter-partisan communication and cooperation.
“My district, B, is represented by a Liberal AND a PC! They’ll need to learn how to get along!
Some interesting side-effects of DMP...
Majority governments with absolute power would be less common. Minority or coalition governments would be expected and normalised, with more inter-party negotiation, and much greater transparency.
Under DMP, the 2015 election results would have been:
The Lieutenant-Governor would likely have requested the Liberals form government, as they led the popular vote.��In this example, one can imagine a Liberal minority government negotiating with the other parties for support on a bill-by-bill basis.
Parties will need to learn how to cooperate in the legislature too!
More inter-party negotiation is good for democratic transparency & accountability.
Some interesting side-effects of DMP...
For more info, get in contact...
Anna Keenan BSc(Math), BA(Economics)�is a resident of New Glasgow, PEI. She has been inspired by the work of Sean Graham to promote the DMP model for the Island and for Canada, and is available for more in-depth consultation.�anna.c.keenan@gmail.com - (902) 621 0341
Sean Graham BSc (Political Science), BSc (Math), University of Alberta,�is the creator of the DMP electoral model. His electoral systems research project was funded by the University of Alberta’s Undergraduate Research Initiative. See his full papers amongst the submissions to the PEI Special Committee for Democratic Renewal.�smg1@ualberta.ca