1 INTRODUCTION  
2 DATA SAMPLE  
3 UNIFORMITY OF POLARIZATION PA’S IN JVAS/CLASS 8.4-GHZ SURVEYS  
3.1 Regions of optical polarization alignments  
3.2 Full sky coverage  
3.3 Preliminary results  
4 IDENTIFICATION OF REGIONS OF ALIGNED POLARIZATIONS  
5 INTERPRETING THE RESULTS  
5.1 Are the data contaminated by systematics?  
5.2 Are the polarization alignments real?  
6 CONCLUSION