Republican campaigns are outspending Democrats on immigration advertising by a significant margin in the final weeks before the November midterm elections, according to NPR's analysis of ad spending data. The GOP strategy reflects confidence that immigration remains a potent issue with voters, particularly in swing districts and states.

The Republican emphasis on border security and illegal immigration dominates their messaging. GOP candidates frame the issue as a failure of Biden administration policies, pointing to record numbers of encounters at the southern border. Democrats, by contrast, are allocating fewer resources to immigration advertising and instead emphasizing abortion rights following the Supreme Court's decision to overturn Roe v. Wade.

This divergence in campaign priorities reveals a fundamental difference in how each party reads the political landscape heading into midterms. Republicans believe immigration resonates across their base and persuadable independent voters. The party has made "open borders" a central attack line against Democratic candidates, regardless of their actual positions on immigration policy.

Democrats have largely ceded ground on immigration messaging, betting that reproductive rights will drive turnout among their voters, particularly young women and suburban voters. Internal polling by both parties likely shaped these competing strategies. Republicans see the southern border as their strongest attack vector. Democrats worry that engaging on immigration plays to Republican strengths.

The ad spending disparity suggests Republicans are more confident in their messaging advantage on this issue. Immigration consistently ranks high in voter concern surveys, and Republicans have successfully owned the issue for years. By allocating more resources and creative energy to the topic, GOP campaigns signal they believe it offers a clearer path to victory than other issues.

The result is an asymmetrical campaign focused on two separate issues. Republicans hammer immigration in hopes of mobilizing their coalition and flipping seats. Democrats defend abortion rights to energize their base. This split reflects the polarized nature of contemporary American politics, where each party operates in its own messaging ecosystem rather than engaging the same battlegrounds.

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