Copypaste for you:

How Groups Voted in 1980

Notes: Survey by CBS News and the New York Times. Sample of 15,201 voters as they left voting booths on Election Day, November 4, 1980.  “Don’t know” and “other” responses not included.

Don't know why the links don't work 🤷

If you look at the actual numbers you realize that it's the people that were older that voted in majority for Reagan and the % of registered electors and voters was higher for older populations.

Voting and Registration in the Election of November 1980

Within Data April 1982

Report Number: P20-370

• Table 1. Reported Voting and Registration, by Single Years of Age and Sex [<1.0 MB]
• !Table 2. Reported Voting and Registration, by Race, Spanish Origin, Sex, and Age, for the United States and Regions [<1.0 MB]
• Table 3. Reported Voting and Registration, by Race, Spanish Origin, and Metropolitan-Nonmetropolitan Residence, for the United States and Regions [<1.0 MB]
• Table 4. Reported Voting and Registration, by Race, Spanish Origin, and Age, for Divisions [<1.0 MB]
• Table 5. Reported Voting and Registration, by Race and Spanish Origin, for States [<1.0 MB]
• Table 6. Reported Voting and Registration, by Race and Spanish Origin, for 30 Selected Standard Metropolitan Statistical Areas [<1.0 MB]
• Table 7. Reported Voting and Registration of Primary Family Householders, by Race, Spanish Origin, Age, Tenure, and Presence of Own Children Under 18 Years [<1.0 MB]
• Table 8. Reported Voting and Registration, by Race, Spanish Origin, Age, Sex, and Marital Status [<1.0 MB]
• Table 9. Reported Voting of Husbands and Wives in Primary Married-Couple Families, by Selected Characteristics [<1.0 MB]
• Table 10. Reported Voting and Registration, by Race, Spanish Origin, Age, Sex, and Years of School Completed [<1.0 MB]
• Table 11. Reported Voting and Registration, by Race, Spanish Origin, Sex, Age, Employment Status, and Class of Worker [<1.0 MB]
• Table 12. Reported Voting and Registration, by Race, Spanish Origin, Sex, and Major Occupation Group [<1.0 MB]
• Table 13. Reported Voting and Registration of Primary Family Members, by Race, Spanish Origin, Age, and Family Income [<1.0 MB]
• Table 14. Reported Voting and Registration of Primary Family Members, by Race, Spanish Origin, Age, Duration of Residence, and Tenure [<1.0 MB]
• Table 15. Reported Voting in 1980 and 1976 of Persons 22 Years Old and Over, by Race, Spanish Origin, Sex, and Age [<1.0 MB]
• Table 16. Reported Voting in 1980 and 1976 of Persons 22 Years Old and Over, by Race, Spanish Origin, Sex, and Years of School Completed [<1.0 MB]
• Table 17. Reported Reason for Not Voting, for Persons Who Reported Registering But Not Voting, by Race, Spanish Origin, Sex, and Age [<1.0 MB]
• Table 18. Reported Reason for Not Voting, for Persons Who Reported Registering But Not Voting, by Race, Spanish Origin, Sex, Employment Status, Class of Worker, and Major Occupation Group [<1.0 MB]
• Table 19. Reported Reason for Not Registering to Vote, by Race, Spanish Origin, Sex, and Age [<1.0 MB]
• Table 20. Reported Reason for Not Registering to Vote, by Race, Spanish Origin, Sex, Employment Status, Class of Worker, and Major Occupation Group [<1.0 MB]
• Table 21. Reported Voting for a Presidential Candidate and Method of Voting, by Race, Spanish Origin, Sex, and Age [<1.0 MB]
• Table 22. Reporting on Voting and Registration, by Race, Spanish Origin, Sex, and Type of Respondent [<1.0 MB]