This story was first published March 6, 2018.
The Washington Post-ABC News Poll is designed to reflect the current state of American politics.
The poll is not a prediction of what the future holds.
The questions are weighted to reflect current public opinion and political attitudes in each state.
The data is based on interviews with 1,000 registered voters from March 6 through March 19, 2018, using a random sample of 6,848 adults who were 18 or older, and who have a landline telephone.
The margin of sampling error is plus or minus 2.7 percentage points.