The LongRoom Polling Analysis uses the latest voting data from each state's Secretary of State or Election Division. The voting data is kept current by incorporating the latest updates from each state as they become available. This means that the LongRoom Polling Analysis accurately reflects the actual voting demographics, precinct by precinct, county by county, and state by state.
Because the LongRoom Polling Analysis is exclusively data based, it makes it possible to demonstrate from the crosstabs of an individual poll whether that poll is either left or right leaning.
The analysis of the polls of each polling organization and the associated bias is illustrated in a line chart. The most recent poll results are displayed separately and a graphic representation of the amount the poll leans either left or right is shown.
The graphs below cover the last three presidential elections and show the LongRoom Polling Analysis of polls for those elections. In all cases, the LongRoom Analysis was accurate to within +/- 0.3%.
References for the voting data from each state are included below in the list of sources.