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Fact check: What is the longest streak of a state having only one party represented in the Senate?

Checked on August 21, 2025

1. Summary of the results

Based on the analyses provided, there is limited concrete information available to definitively answer the question about the longest streak of a state having only one party represented in the Senate. The most specific data point comes from one source, which indicates that Kansas has not had a Democratic senator since 1932, representing the longest current streak of single-party Senate representation [1].

The analyses reveal that while several sources discuss related topics such as split Senate delegations and partisan polarization, most do not directly address historical streaks of single-party representation. One source mentions presidential party streaks, referencing a 24-year streak of Democratic-Republicans and a 20-year streak of Democrats, but this relates to presidential control rather than state Senate representation [2].

Multiple sources acknowledge the decline of split Senate delegations and note that only five states will have politically-split Senate delegations in the current Congress, indicating increased partisan polarization [3] [4].

2. Missing context/alternative viewpoints

The analyses reveal significant gaps in available data regarding historical Senate representation streaks. Key missing context includes:

  • Complete historical records of all states' Senate representation patterns over time
  • Comparison data between different states' single-party streaks throughout American history
  • Analysis of factors that contribute to long-term single-party dominance in specific states
  • Regional patterns that might explain why certain states maintain consistent party representation

The sources focus primarily on current political dynamics rather than comprehensive historical analysis [3] [4] [5]. This contemporary focus limits the ability to provide thorough historical context for understanding long-term representation patterns.

3. Potential misinformation/bias in the original statement

The original question itself does not contain misinformation or apparent bias - it is a straightforward factual inquiry about historical Senate representation. However, the lack of comprehensive data in the available analyses means that any definitive answer would be incomplete or potentially misleading.

The analyses suggest that while Kansas's streak since 1932 appears to be the longest current streak [1], this may not necessarily represent the longest streak in American history. The absence of complete historical data across all sources indicates that a thorough answer would require more extensive research into Senate representation patterns dating back to the early years of the Republic.

The focus on current political polarization in several sources [3] [4] might inadvertently suggest that single-party state representation is primarily a modern phenomenon, when historical patterns may reveal different trends over America's political development.

Want to dive deeper?
Which state has had the longest streak of Democratic representation in the Senate?
How many states have had only Republican representation in the Senate since 2020?
What is the current longest streak of a state having only one party represented in the House of Representatives?