Kamala Harris’ polling numbers in battleground states have steadily declined since she began giving more interviews to press in recent weeks, according to multiple national pollsters. After weeks of facing bipartisan criticism for failing to sit for interviews, Harris broke the flood gates and began a media blitz campaign that kicked off with a Sept. 19 town hall moderated by Oprah. The Oprah hit started a run that included a one-on-one with MSNBC’s Stephanie Ruhle, a “60 Minutes” interview and an appearance on the popular sex-focused podcast “Call Her Daddy.” Harris struggled to define hersel…