How Jackson became Democrats’ pick to take on Collins in Maine

Former Maine Senate President Troy Jackson (D) is shifting his attention to a coming battle against incumbent Sen.

Susan Collins (R-Maine) after pulling off a stunning rise to become the likely Democratic nominee for Senate.

Jackson appears poised to formally win the nod Saturday at the party’s nominating convention in Bangor after securing an overwhelming majority of delegates and his main competitors dropped out of the race.

After...