Predicted continuum polarization from MCPOL simulations for axisymmetric ellipsoidal ejecta with different axial ratios and electron-scattering optical depths. Panel (A) shows the continuum polarization as a function of viewing angle for axial ratios A = 1.05, 1.1, 1.2, and 1.3. Blue and red curves correspond to photons emitted from electron-scattering optical depths of τ = 1 and τ = 3, respectively. The horizontal dashed line marks the observed bias-corrected continuum polarization, while the shaded region indicates its uncertainty. Panel (B) shows the continuum polarization as a function of electron-scattering optical depth for viewing angles of 30^∘, 60^∘, and 90^∘. Colors denote different axial ratios, while line styles represent different viewing angles.