Fact check: How many US states have exclusively Democratic congressional representation?

1. Summary of the results

Based on the available analyses, four US states appear to have exclusively Democratic congressional representation: California, Illinois, Maryland, and New York ^[1]. However, this finding comes with significant limitations in the source material provided.

The analysis identifies:

• California with 43 Democratic seats and 9 Republican seats - making it not exclusively Democratic despite being mentioned as such ^{[1] [2]}
• Illinois with 14 Democratic and 3 Republican seats - also not exclusively Democratic ^[1]
• Maryland with 7 Democratic and 1 Republican seat - not exclusively Democratic ^[1]
• New York with 19 Democratic and 7 Republican seats - not exclusively Democratic ^[1]

This creates a contradiction - the source claims these states have "exclusively Democratic" representation while simultaneously providing vote counts that show Republican representatives in each state.

2. Missing context/alternative viewpoints

The analyses provided are severely incomplete for answering this question comprehensively:

• No coverage of smaller states that might actually have exclusively Democratic delegations, such as states with only 1-2 congressional seats that could be entirely Democratic
• No current date context - congressional representation changes every two years, and without knowing the election cycle or current composition, the data may be outdated
• Limited geographic scope - the sources focus primarily on redistricting battles in large states like California and Texas, ignoring the majority of US states ^{[3] [2]}
• No definition clarification of whether "exclusively Democratic" means 100% of House seats, or includes Senate representation as well

Political parties and redistricting organizations would benefit from promoting narratives about Democratic or Republican dominance in certain states to justify redistricting efforts and fundraising campaigns.

3. Potential misinformation/bias in the original statement

The original question itself appears neutral, but the source analyses contain clear contradictions that suggest potential misinformation:

• Source p1_s1 incorrectly categorizes states as having "exclusively Democratic" representation while providing vote counts that include Republican seats
• The focus on redistricting contexts in sources p1_s2 and p1_s3 suggests these analyses may be politically motivated rather than providing objective congressional composition data
• Lack of comprehensive state-by-state analysis means the true answer to this question cannot be determined from the provided sources

The question requires complete, current congressional delegation data for all 50 states to be answered accurately, which the provided analyses fail to deliver.