The Path to $\pm$0.4\% Moller Polarimetry in Hall A at Jefferson Lab

The proposed uncertainty on beam polarimetry for the future MOLLER and SoLID experimental programs at Jefferson Lab is $\pm$0.4\%. The polarimetry team aims to reach this level of precision individually with both the M\o ller and Compton polarimeters in Hall A. This discussion will focus on the the M\o ller polarimeter and why and how we believe we can reach this goal given recent insights and experience from the PREX-2 and CREX experiments.