The original question was phrased by the source as "To what extent do you believe the following conspiracy theories? Please select one option on each row. - Lee Harvey Oswald didn't act alone in assassinating JFK"
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Belief that Oswald had help in assassinating JFK in the United States 2019
This statistic shows the results of a 2019 survey on conspiracy theories in the United States. During the survey, the respondents were asked whether they believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating John F. Kennedy, or not. ** percent of respondents stated they strongly believe in this theory, while ** percent said they strongly disbelieve.
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YouGov. (January 22, 2019). To what extent do you believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating JFK? [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/
YouGov. "To what extent do you believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating JFK?." Chart. January 22, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/
YouGov. (2019). To what extent do you believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating JFK?. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/
YouGov. "To What Extent Do You Believe in The Conspiracy Theory That Lee Harvey Oswald Didn't Act Alone in Assassinating Jfk?." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 22 Jan 2019, /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/
YouGov, To what extent do you believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating JFK? ÌÇÐÄÆƽâ°æ, /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/ (last visited July 29, 2026)
To what extent do you believe in the conspiracy theory that Lee Harvey Oswald didn't act alone in assassinating JFK? [Graph], YouGov, January 22, 2019. [Online]. Available: /statistics/959514/conspiracy-belief-lee-harvey-oswald-had-help-assassinating-jfk/
