AbstractSince 2016, Americans’ attitudes toward Russia and Vladimir Putin have shifted, with Republicans becoming far more supportive of both. And though condemnation of Russia's invasion of Ukraine in 2022 remains bipartisan, many Christian‐right leaders still support Putin and Russia. What undergirds this support? Drawing on three national data sets, we theorize Americans’ warmth toward Putin and Russia is reinforced by an ideology that seeks to institutionalize America's mythical Anglo Protestant ethno‐culture—Christian nationalism. Though we propose Christian nationalism's relationship with Russia is more contingent on Russia's geopolitical activity vis‐à‐vis the United States, we theorize that Christian nationalism consistently predicts Putin support due to his authoritarian ethno‐nationalism. April 2018 data show those who affirm America's Christian heritage in the past and/or present are more likely to view Putin and Russia favorably and Russia as our ally. March 2021 data also reveal a linear positive association between Christian nationalism and favorability toward Putin. And March 2022 data reveal a linear positive association between Christian nationalism and admiring Putin's leadership. They also show a U‐shaped curvilinear relationship with viewing Russia as a threat. Paradoxically, Christian nationalism may warm Americans toward foreign authoritarians like Putin even when it compels Americans to perceive their nations as threats.
