This Small Rust-Belt City Holds the Secret to Democrats' Latino Woes: Reading, PA, Latinos

[somsai]

5. Catalist is the research firm used by the Democratic Party, more specific than Pew

though Pew is very good.
Catalist uses all available data down to the precinct level and compares them against voting lists also. They are considered the gold standard. I look at https://www.dropbox.com/s/re0gtn1o57fzwp5/Catalist_What_Happened_2022_Public_National_
Crosstab=0
For the past up to 2022. Some things to remember the numbers on the left in green are a percentage of total voters, red and blue are the percentage of Dem voters.So if 10% of voters are the Silent/Greatest generation, and 46% of those voters voted Dem, that means 4.6% of total voters were Silent/Greatest who voted Dem.

It's Catalist with an I not a Y which spell check wants to misdirect you with. https://catalist.us/data/