Thank you so much for inviting me to appear before this committee.
I'm Heidi Tworek, Canada research chair and professor at the University of British Columbia in Vancouver, where I direct the Centre for the Study of Democratic Institutions. We focus on platforms and media, including examining online abuse and harassment, elections, and health communications in Canada and globally.
While some of our research indicates comparatively high trust in electoral institutions in Canada, I will focus today on two broader challenges to our democracy: online harassment and generative AI.
First, online harassment of public officials and politicians has become an increasing problem. I began looking at the online abuse of political candidates in the 2019 federal election. Since then, our work has examined many groups of public officials and professionals, including health communicators, journalists and academics. By harassment, I mean intimidation such as death threats or identity-based insults, not rigorous and vigorous democratic debate over important issues that could include, for example, swear words because people feel so strongly.
I'm sorry to report that harassment is worsening, and its effects are very real. In Quebec, for example, 741 of the province's 8,000 local politicians have resigned since 2021. This is almost 10%, and many of them cited online harassment as a reason. Local politicians were surveyed by Canadian Municipal Barometer in 2025, and 63% had experienced harassment.
Online abuse and harassment also silence public officials. Any emergency, whether COVID or wildfires, puts officials into the spotlight. Abuse swiftly follows. Some public agencies are now reluctant to put forward spokespeople at all. Without intervention, this can become a vicious spiral of silence, in which institutions and public officials say less because they fear harassment, thus lessening the quality of our public democratic debate and undermining resilience.
Second, generative AI has supercharged such problems. It lowers the barrier to creating massive volumes of fraud, scams, impersonation, deepfakes and other forms of online harassment. This can happen for political, economic or personal gain, or even for nihilistic violence.
Canadians' increasing use of GenAI chatbots creates new vulnerabilities. Many GenAI providers privilege U.S.-based information, for example. This is even reflected in some tools designed by Canadian institutions to assess the reliability of claims. For example, when I ask such tools questions about health, they privilege answers from the U.S. Centers for Disease Control over information from the Public Health Agency of Canada.
A crucial issue here is data voids, which are spaces in which there's little or no high-quality information. A study by the Institute for Strategic Dialogue found that when there were data voids, chatbots in the European Union often reproduced Russian state media, even when those sources were banned. This so-called LLM poisoning enables foreign actors to inject incorrect material that is then reproduced within chatbots without users' knowledge. This is a prime space for foreign interference.
To address these issues, I offer three recommendations.
First, the government can use legislation to address chatbots and many of the transparency issues related to the problems I've described, for example, in a revised online harms act.
For full disclosure, I am a member of the reconvened expert group advising the heritage ministry on online safety, but we, the experts, will have no part in drafting the final bill.
Second, we need to ensure capacity for long-term monitoring across and between elections, rather than providing short-term grants. I support the establishment of a non-partisan Canadian democracy fund, recommended already by so many witnesses. This could complement British Columbia's proposed centre of excellence for democratic engagement, but any funds need to ensure long-term research too.
Finally, it remains vital to provide accurate information via trusted channels to the multicultural, diverse population of Canada and to prevent data voids. Public institutions need communications strategies built for the 2020s and the chatbot age. Communications are often the first thing to go in a budget crunch, but the cost of poor communications is a weakened democracy.
Thank you so much. I look forward to questions.