Her emerging 2018 strategy, according to more than a dozen friends and advisers familiar with her plans, is to leverage the star power she retains in some Democratic circles on behalf of select candidates while remaining sufficiently below the radar to avoid becoming a useful target for Republicans seeking to rile up their base.

Most likely, they said, Clinton will attempt to help Democratic candidates who have a history of supporting her and her family, and expending her political capital in a number of the 23 congressional districts she won in 2016 but are now held by a Republican. Lending a hand to Democrats organizing at a grass-roots level is a priority, they added.

“She’s not going to be up front,” said Jaime Harrison, a former chairman of the South Carolina Democratic Party and an associate chairman of the Democratic National Committee.