Jeb Bush’s presidential campaign is on life support. His poll numbers have been steadily declining for months, his debate performances have been tepid and his donors are abandoning him, mostly for his one-time protege Marco Rubio. But now Bush is revealing a more vulnerable side, and it may be just what his campaign needs to get back on track.

Bush shared his family’s struggles with drug addiction on Tuesday at a forum on heroin addiction at Southern New Hampshire University.