Disability affects the lives of hundreds of millions across the world. People with disabilities often experience discrimination and unequal treatment. Sometimes the mere categorization of people into groups, that is, ‘healthy’ vs. ‘disabled’, is enough to trigger discriminatory behaviour against people with disabilities. Previous studies show that in general disabilities depress political participation. However, the effect of disability-based discrimination on participation has received little scholarly attention. We study how perceptions of discrimination affect three forms of political participation: voting; contacting politicians; and participating in demonstrations. Results show that disability decreases voting, especially when associated with perceptions of discrimination. The analysis points in the opposite direction when the other two forms of political participation are analysed. People with disabilities are more likely to partake in demonstrations and contact politicians than non-disabled. Thus, disability-based discrimination is not always a hindrance to participation. It sometimes further motivates people with disabilities to participate.