(AP) – As Vice President Kamala Harris prepares to announce her running mate, a new poll from The Associated Press-NORC Center for Public Affairs Research finds that several of the top potential contenders for the role are largely unknown to voters. The survey, which was conducted after President Joe Biden announced he was withdrawing from the race and Harris became the likely Democratic presidential nominee, highlights the strengths and weaknesses that different politicians could bring to the ticket. Arizona Sen. Mark Kelly stands out as a prospect who has more name recognition — and higher favorability, particularly among Democrats. And others, like Pennsylvania Gov. Josh Shapiro, while less known nationally, could draw on a deeper well of support in their home states and regions.