The actors Randall Park, Jennifer Connelly and Claire Holt have signed up, as have an NBC News correspondent and a beauty influencer.

© Rozette Rago for The New York Times

The actors Randall Park, Jennifer Connelly and Claire Holt have signed up, as have an NBC News correspondent and a beauty influencer.

© Rozette Rago for The New York Times

Economic factors can tell us only so much about how presidential elections will turn out.