Will Tatiana Auguste Win the Terrebone By-Election?

Tatiana Auguste just had the most volatile week of any candidate in this by-election cycle. Her Polymarket price collapsed 41.5 points on March 31, then clawed back 4.5 points in the last 24 hours. That kind of whipsaw does not happen without real information moving through the market. The math doesn’t lie: something changed fast, and then something changed again.

The Tatiana Auguste contract on Polymarket currently sits at 61 cents, implying a 61% probability of winning the Terrebone by-election. The NO side prices at 39 cents. The market resolves April 13, 2026, with $55,292 in total volume and $112,064 in available liquidity. Twelve days out from resolution, the price is still moving hard.

How the Tatiana Auguste Contract Works

A YES contract pays $1 if Tatiana Auguste wins the Terrebone by-election by the April 13, 2026 resolution date. A NO contract pays $1 if any other candidate wins. The resolution source is Polymarket’s own market resolution process.

• YES: Tatiana Auguste wins Terrebone. Price: $0.61. Probability: 61%. Resolves: April 13, 2026.
• NO: Any other candidate wins Terrebone. Price: $0.39. Probability: 39%. Resolves: April 13, 2026.

A NO buyer needs one of the five named opponents to outperform Auguste on election day. The field includes Nathalie Sinclair-Desgagne, Adrienne Charles, Maxime Beaudoin, Maria Cantore, and Benjamin Rankin. A fragmented opposition actually helps Auguste: five candidates splitting the anti-Auguste vote makes a path to victory structurally easier for her. NO wins only if one challenger consolidates enough support to overcome that fragmentation, or if Auguste’s coalition collapses before April 13.

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Market Signals: A Week of Violent Moves

Combine the 24-hour gain of 4.5 points, the 7-day loss of 39 points, and Polymarket’s trend score into one composite signal: this market is decelerating off a sharp sell-off. The buying pressure visible in the last 24 hours has not yet erased the March 31 damage. Auguste’s price is recovering, not recovered.

Total volume of $55,292 and a 24-hour figure of $709 signal a low-liquidity market where individual bets move price meaningfully. The $112,064 in available liquidity exceeds total traded volume, which means the order book is well-supplied but trader conviction is moderate. This is not a market with deep two-sided action. It is a market where momentum trades carry outsized weight.

• Auguste 24-hour change: plus 4.5 points — Short-term buyers are returning after the March 31 crash, but volume at $709 is too thin to confirm a genuine reversal.
• Auguste 7-day change: minus 39 points — The March 31 drop of 41.5 points wiped out nearly all gains from the March 24 surge. That magnitude suggests a specific negative news event, not routine drift.
• March 24 surge: plus 47.5 points in one day — Auguste went from near-parity to heavy favorite on a single date. That kind of move points to a major endorsement, debate performance, or polling release that hit the market simultaneously.
• Liquidity at $112,064 versus volume at $55,292 — Order book depth exceeds all money ever traded. New capital entering this market would move Auguste’s price with relatively little friction.
• Six-candidate field — Nathalie Sinclair-Desgagne, Adrienne Charles, Maxime Beaudoin, Maria Cantore, and Benjamin Rankin all compete for the non-Auguste vote. No evidence of consolidation around a single challenger.

Lines Analysis: Auguste Holds the Structural Edge

Here’s what the market is missing in the noise around the March 31 crash: Auguste’s 61% probability holds despite a near-complete reversal of the March 24 gains. She started this market at 50 cents. She is still 11 cents above that baseline. The crash knocked her from front-runner to strong-favorite, not from front-runner to underdog. That distinction matters. The market tried to reprice Auguste down and settled at 61%, not 39%.

The NO case rests on one real scenario: a single challenger, most plausibly Nathalie Sinclair-Desgagne given that name recognition in Terrebone, consolidating the opposition vote before April 13. With 12 days left and five names on the ballot, late consolidation is possible but historically rare in Canadian federal by-elections. Every day the field stays fragmented, Auguste’s structural advantage compounds.

• Auguste price direction before April 13: Any confirmed polling lead above 5 points pushes Auguste above 70 cents. Any credible poll showing a challenger within 3 points drops her below 55 cents.
• Sinclair-Desgagne consolidation move: A formal endorsement from Beaudoin, Charles, Cantore, or Rankin directed toward one rival candidate would be the single most bearish event for Auguste’s price.
• Voter turnout signals: Low by-election turnout in Quebec historically favors organized ground operations. Whichever campaign demonstrates superior canvassing data first moves this market.
• April 13 resolution clock: As the by-election date locks in, Auguste’s price will compress toward 85 to 90 cents if she leads polls, or toward 45 cents if polling reverses. Thin volume amplifies both moves.

The $55,292 in total volume across this market reflects low but real conviction. Traders have not abandoned Auguste despite the March 31 crash. The 24-hour recovery, thin as it is, points to buyers who believe that crash was an overreaction. The data favors Auguste holding the lead into April 13, but the fragmented field, not any Auguste-specific strength, is doing most of the structural work here.

LINES VERDICT

Tatiana Auguste Remains Market Favorite

Auguste holds a clear price advantage built on field fragmentation. Five opponents splitting the opposition vote is a structural gift that polling data or late endorsements would have to actively dismantle before April 13.

What the market says: Auguste prices at 61%, making her a moderate favorite with real but not dominant conviction. With the resolution date on April 13, 2026, the remaining window is short enough that any single breaking development, poll, withdrawal, or endorsement, could move this market sharply in either direction.