WASHINGTON — Joseph R. Biden Jr. has entered the final stage of his deliberations about choosing a running mate as he prepares to talk one-on-one with the finalists next week, while Democratic leaders lobby him furiously to elevate their allies and sink their enemies.
Mr. Biden’s campaign has conducted extensive polling and focus groups with voters on a collection of candidates and weighed an array of factors, such as the impact of the pick in battleground states, and whether to choose a Black woman. Aides say the announcement will come the week before the Democratic convention in August.
Two candidates who received scant attention early in the process are now among the leading contenders: Representative Karen Bass of California and Susan E. Rice, the former national security adviser, according to Democratic officials briefed on the selection process. Ms. Bass in particular has moved rapidly toward the top of Mr. Biden’s list amid an intensive lobbying drive by her fellow House Democrats, and has impressed the former vice-president’s search committee.
Both contenders are Black women.