From the Document: "Canada is to hold parliamentary elections on October 21, 2019. Polls suggest a close race, with Prime Minister Justin Trudeau and his Liberal Party struggling to hold onto the majority they won in 2015. The outcome of the election could have implications for the United States, which is closely bound to Canada by a 5,500-mile border, extensive commercial ties, and mutual defense commitments."
CRS Insight, IN11178
Congressional Research Service: https://crsreports.congress.gov/