Final answer:
The Suffragist newspaper was published by the National Woman's Party (NWP), known for its militant suffrage tactics and key role in achieving the passage of the Nineteenth Amendment in 1920 that granted women the right to vote.
Step-by-step explanation:
The suffrage party that published The Suffragist newspaper was the National Woman's Party (NWP). Founded by Alice Paul and Lucy Burns in 1916, the NWP became known for its more militant approach to the women's suffrage movement, including picketing the White House and hunger strikes when its members were incarcerated. The Suffragist served as the official publication of the NWP, chronicling the struggle for women's suffrage and the party's efforts toward the passage of the Nineteenth Amendment, which was finally ratified in 1920, granting women the right to vote in the United States.