EVPA of a face-on jet with a = 0.5 and γ_∞ = 5, viewed along the image contour φ = π/2 (i.e., at 12 o’clock). The jet and counterjet each produce different polarization patterns, with the forward jet only becoming the dominant source of polarization outside the light cylinder. When a counterjet is present, the net polarization angle therefore swings sharply at the light cylinder. The two crosses mark the lensed positions of the light cylinder in the forward jet and light cylinder in the counterjet, respectively. Note that this calculation includes general relativistic lensing to match Figure 10 of Z. Gelles et al. (2025), while the figures in other sections of this paper use a flat space approximation.