The Art of Legitimate Decision-Making

Legi­ti­ma­cy is often men­tio­ned as the cor­ner­stone of our demo­cra­cy. The cri­ti­cal ques­ti­on, then, is how do we main­tain this legi­ti­ma­cy that is so essen­ti­al to the health of our demo­cra­cy? Our new rese­arch has high­ligh­ted a key fac­tor: the way in which citi­zens vote. This see­min­gly simp­le act of voting is, in fact, a power­ful deter­mi­nant of how legi­ti­ma­te a decisi­on is per­cei­ved by the public.

Majority Voting: Is It the Optimal Way of Decision-Making?

In the world of poli­tics and local com­mu­ni­ty decisi­ons, the majo­ri­ty vote is often seen as the default. We regu­lar­ly find our­sel­ves voting for a sin­gle can­di­da­te or one spe­ci­fic com­mu­ni­ty pro­ject. Howe­ver, this rai­ses a cru­cial ques­ti­on: Is the majo­ri­ty vote always the most effec­ti­ve approach? Could the­re be other ways to navi­ga­te through mul­ti­ple choices that enhan­ce the legi­ti­ma­cy of the resul­ting decisions?

To inves­ti­ga­te the­se ques­ti­ons, we con­duc­ted an online expe­ri­ment, invi­t­ing par­ti­ci­pants to arti­cu­la­te their pre­fe­ren­ces through four dif­fe­rent voting methods. Each par­ti­ci­pant faced a seri­es of ques­ti­ons, each with mul­ti­ple respon­se opti­ons. The par­ti­ci­pants then had to navi­ga­te the­se choices in four dif­fe­rent ways: 1) Selec­ting a favou­rite opti­on, 2) Assigning scores, 3) Select and Rank and 4) Approving/disapproving opti­ons. The methods were pre­sen­ted in a smart­pho­ne app (Figu­re 1).

Figure 1: Illustration of the four voting methods used for choosing among five options

Figu­re: Alix d’Agostino, DeFacto

Voters Value Flexibility in Expressing Their Preferences

We found a dis­tinct pre­fe­rence among voters for sys­tems that allow grea­ter fle­xi­bi­li­ty in expres­sing their choices. Tra­di­tio­nal majo­ri­ty voting, which limits the selec­tion to just one opti­on from a set, is per­cei­ved as the least fle­xi­ble method. In con­trast, ran­ge voting enab­les a more nuan­ced expres­si­on of pre­fe­ren­ces, allowing voters to assign up to five points to each opti­on. The Modi­fied Bor­da Count occu­p­ies a midd­le ground in terms of fle­xi­bi­li­ty, offe­ring more opti­ons than appro­val voting but less than the exten­si­ve sca­le of ran­ge voting.

It is exact­ly this hier­ar­chy of nuan­ce that is also reflec­ted in par­ti­ci­pants’ per­cep­ti­ons of legi­ti­ma­cy: Ran­ge voting is rated as the most legi­ti­ma­te, fol­lo­wed by the Modi­fied Bor­da Count, appro­val voting, and, final­ly, majo­ri­ty voting.

In other words, voters equa­te the abi­li­ty to express their pre­fe­ren­ces in a pret­ty nuan­ced man­ner with legi­ti­ma­cy. Howe­ver, does this imply that in all collec­ti­ve decisi­on-making con­texts, repla­cing the com­mon­ly used majo­ri­ty vote with ran­ge voting would yield bet­ter outcomes?

Figure 2: Experiment Results: Voting Methods and Legitimacy Ratings

Figu­re: Alix d’Agostino, DeFacto

Context Impacts Legitimacy: Two Scenarios

To ans­wer this ques­ti­on we app­lied an inte­res­ting tac­tic: Par­ti­ci­pants were posed ques­ti­ons of vary­ing signi­fi­can­ce: some were of sub­stan­ti­al poli­ti­cal impor­t­ance, like COVID-19 mea­su­res, while others were of mini­mal socie­tal impact, such as selec­ting their favou­rite colour.

What unfold­ed was rich in insights: The con­text of the ques­ti­on inde­ed influ­en­ced legi­ti­ma­cy ratings! Regard­less of the socie­tal rele­van­ce — signi­fi­cant or tri­vi­al, par­ti­ci­pants rated ran­ge voting as more legi­ti­ma­te than the majo­ri­ty vote, aligning with our broa­der fin­dings. Howe­ver, a more nuan­ced fin­ding emer­ged when con­tras­ting the­se con­texts wit­hin the same voting method. Figu­re 2 offers a visu­al gui­de to this dis­co­very: When it comes to the majo­ri­ty vote (most left), we obser­ve that in sce­n­a­ri­os of les­ser socie­tal gra­vi­ty (indi­ca­ted by yel­low mar­kers), it was per­cei­ved as more legi­ti­ma­te com­pa­red to con­texts with more signi­fi­cant socie­tal impli­ca­ti­ons (pur­p­le mar­kers). Strin­kin­gly, ran­ge voting demons­tra­ted the rever­se pat­tern. This method recei­ved even hig­her legi­ti­ma­cy in sce­n­a­ri­os whe­re the out­co­mes held signi­fi­cant socie­tal impact.

This sug­gests that in situa­tions car­ry­ing high sta­kes, voters place grea­ter value on being able to arti­cu­la­te their pre­fe­ren­ces tho­rough­ly. The abi­li­ty to rate all opti­ons, as oppo­sed to merely selec­ting a sin­gle one, con­tri­bu­t­ed to a heigh­te­ned sen­se of legi­ti­ma­cy among voters.

So, what have we unco­ve­r­ed thus far? Voters value fle­xi­bi­li­ty in the voting method, and this pre­fe­rence inten­si­fies in decisi­ons with socie­tal rele­van­ce. This insight holds signi­fi­cant impli­ca­ti­ons for poli­cy­ma­kers, but there’s more to the story.

The Link Between Clear Preferences and Nuanced Voting

Inde­ed, poli­cy­ma­kers should con­si­der an addi­tio­nal dimen­si­on: the cor­re­la­ti­on bet­ween voters’ cla­ri­ty of opi­ni­on and their pre­fer­red voting method. During our stu­dy, as voters repeated­ly eva­lua­ted the same set of ques­ti­ons through dif­fe­rent voting methods, an inte­res­ting pat­tern emer­ged: Tho­se with clear opi­ni­ons ten­ded to view more fle­xi­ble voting sys­tems as more legi­ti­ma­te. Con­ver­se­ly, voters with fluc­tua­ting pre­fe­ren­ces some­ti­mes mis­in­ter­pre­ted their own uncer­tain­ty as doubts about the legi­ti­ma­cy of the voting
method its­elf.

A Roadmap for Policymakers

Based on the­se fin­dings, a prac­ti­cal recom­men­da­ti­on for poli­cy­ma­kers emer­ges. If cir­cum­s­tan­ces per­mit, why not emu­la­te this study’s approach? Allow voters to enga­ge with the same ques­ti­on mul­ti­ple times, pro­gres­sing from strai­ght­for­ward methods like the majo­ri­ty vote to more nuan­ced ones like score voting. The last method should be the vote that counts. This gra­dua­ted approach could help voters, espe­cial­ly the unde­ci­ded ones, to crystal­li­ze their pre­fe­ren­ces without fee­ling over­whel­med by com­plex voting systems.

In con­clu­si­on, inte­gra­ting ran­ge voting could signi­fi­cant­ly ele­va­te the per­cei­ved legi­ti­ma­cy of decisi­on-making pro­ces­ses, espe­cial­ly in pola­ri­zed or high-sta­kes situa­tions. Poli­cy­ma­kers aiming to enhan­ce demo­cra­tic enga­ge­ment and legi­ti­ma­cy would do well to con­si­der the­se insights in their elec­to­ral design.

NRP 77 – Digi­tal Transformation
In the Natio­nal Rese­arch Pro­gram­me (NRP 77), sci­en­tists are con­duc­ting rese­arch in 46 rese­arch pro­jects on the topic of “Digi­tal Trans­for­ma­ti­on”. The main objec­ti­ve of the NRP 77 pro­gram­me is to deve­lop know­ledge about the oppor­tu­nities, risks, chal­len­ges and solu­ti­ons of digi­ta­li­sa­ti­on for Switzerland.

Refe­rence:

  • Haus­la­den, Cari­na Ines; Häng­gli, Regu­la; Hel­bing, Dirk; Kunz, Rena­to; Wang, Jun­ling and Pour­n­aras, Evan­ge­los. How Voting Rules Impact Legi­ti­ma­cy (2024). Avail­ab­le at SSRN: https://ssrn.com/abstract=4372245.

image: needpix.com

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