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Fact check: What are the most Republican-leaning congressional districts in Massachusetts?

Checked on August 8, 2025

1. Summary of the results

Based on the analyses provided, Massachusetts has 9 congressional districts, all currently held by Democrats [1] [2]. The most Republican-leaning districts appear to be the 8th and 9th Congressional Districts, which have competitive races with Republican challengers in the 2024 election [2]. Specifically, the 8th Congressional District features a race between Democrat Stephen Lynch and Republican Rob Burke, while the 9th Congressional District has Democrat Bill Keating facing Republican Dan Sullivan [1].

The analyses reveal that despite Trump winning 36% of the Massachusetts presidential vote in 2024, the state's congressional delegation contains no Republican members [3]. At the municipal level, only 40 out of Massachusetts' 351 municipalities voted for Trump by a margin greater than 10 percent, with Middleborough having the largest population among these Trump-supporting communities [3].

2. Missing context/alternative viewpoints

The original question lacks important context about Massachusetts' political landscape and redistricting dynamics. The analyses reveal that President Trump has claimed that Massachusetts lawmakers have gerrymandered the state's congressional districts to deny Republicans representation [3]. However, this claim is disputed by data showing that it's common for a state's congressional delegation to not align perfectly with statewide presidential vote results [4].

The analyses also provide voter registration data that could help identify Republican-leaning areas [5], but the specific breakdown by congressional district is not detailed in the summaries. Additionally, the sources note that partisan gerrymandering can play a role in the discrepancy between statewide voting patterns and congressional representation [4], suggesting that the current district boundaries may influence which areas appear most Republican-leaning.

3. Potential misinformation/bias in the original statement

The original question itself does not contain misinformation, as it simply asks for factual information about Republican-leaning districts. However, the question may inadvertently perpetuate assumptions about Massachusetts having meaningfully competitive Republican districts when the reality is that all 9 districts are solidly Democratic [1] [2].

The analyses suggest potential bias in political narratives, particularly regarding redistricting claims. While Trump and other Republicans benefit from promoting the narrative that Massachusetts Democrats have unfairly gerrymandered districts [3], the data indicates this may not fully explain the lack of Republican representation. The sources emphasize that the mismatch between statewide presidential voting and congressional delegation composition is common nationwide [4], suggesting that Massachusetts' situation may not be as exceptional as some political actors claim.

Want to dive deeper?
Which Massachusetts congressional districts have the highest percentage of Republican voters?
How have Massachusetts congressional district boundaries changed since the 2020 redistricting?
What are the voting trends in Massachusetts' 9th congressional district?
Who are the current Republican representatives in Massachusetts' congressional delegation?
How do Massachusetts' congressional districts compare to national Republican voting trends?