Semianalytic EVPA maps in all four regimes. Polarization ticks are plotted in red and track the windup of the EVPA. In each regime, a reliable tracer of spin is plotted in transparent blue: the two lensed images of the light cylinder in Regime 1, ﹩{\tilde{R}}_{{\rm{face}}-{\rm{on}}}﹩ in Regime 2, and ﹩{\tilde{R}}_{{\rm{limb}}}﹩ in Regimes 3 and 4. Crucially, ﹩{\tilde{R}}_{{\rm{limb}}}﹩ flips from the right side of the image to the left as ﹩{\gamma }_{\infty }\sin i﹩ crosses one. The counterjet spine polarization swing (see Equation (60)) is not visible in the bottom two panels since the inclination is too low, but we illustrate it separately in Figure 18.