Political interests and competitions result in partisanship, which can manifest as party identification, involvement, and membership. These factors can influence beliefs in conspiracy theories. For example, party identification is associated with the endorsement of conspiracy theories that make the rival party look bad (e.g., Berinsky [30]). Enders and Smallpage [31] conduct an experimental study showing that conservative Republicans appear to be more susceptible to conspiratorial cues than progressive Democrats. When informational cues recede, conspiracy beliefs significantly increase among Republicans, even when a Republican is implicated by the conspiracy theory. However, Smallpage et al. [32] argue that it is false assumption that certain parties tend to believe in conspiracy theories more than other parties; instead, parties’ beliefs vary depending on the content of the conspiracy theory. The degree of belief in a particular conspiracy theory depends on political interests. For example, in the U.S., Democrats believe conspiracy theories about Republicans and conservatives, whereas Republicans believe conspiracies about Democrats. Gruzd and Mai [27] demonstrate that in late March 2020, hashtags containing fake news in favor of President Trump were being circulated and highlighted by Trump supporters. In the other and, the goal of party politics is to win an election. Thus, losers rather than winners tend to believe conspiracy theories. Uscinski and Parent [18] demonstrate that those that strongly endorse conspiracy theories are much more likely to be affiliated with the party in power.