diff --git a/polls/README.md b/polls/README.md
index fac8426..caf028d 100644
--- a/polls/README.md
+++ b/polls/README.md
@@ -1,12 +1,18 @@
 ---
 files:
-  - https://projects.fivethirtyeight.com/polls-page/president_primary_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/president_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/senate_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/house_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/governor_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/president_approval_polls.csv
-  - https://projects.fivethirtyeight.com/polls-page/generic_ballot_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/president_primary_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/president_primary_polls_historical.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/president_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/president_polls_historical.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/senate_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/senate_polls_historical.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/house_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/house_polls_historical.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/governor_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/governor_polls_historical.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/president_approval_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/generic_ballot_polls.csv
+  - https://projects.fivethirtyeight.com/polls-page/data/generic_ballot_polls_historical.csv
   - https://projects.fivethirtyeight.com/2020-primary-data/pres_primary_avgs_2020.csv
   - https://projects.fivethirtyeight.com/2020-general-data/presidential_poll_averages_2020.csv
 ---
@@ -16,13 +22,17 @@ This file contains links to the polling data behind our [Latest Polls](https://p
 
 ## Polls
 
-- [Presidential Primary Polls](https://projects.fivethirtyeight.com/polls-page/president_primary_polls.csv)
-- [Presidential General Election Polls](https://projects.fivethirtyeight.com/polls-page/president_polls.csv)
-- [Senate Polls](https://projects.fivethirtyeight.com/polls-page/senate_polls.csv)
-- [House Polls](https://projects.fivethirtyeight.com/polls-page/house_polls.csv)
-- [Governor Polls](https://projects.fivethirtyeight.com/polls-page/governor_polls.csv)
-- [Presidential Approval Polls](https://projects.fivethirtyeight.com/polls-page/president_approval_polls.csv)
-- [Generic Ballot Polls](https://projects.fivethirtyeight.com/polls-page/generic_ballot_polls.csv)
+Current polls files contain data since the most recent election. Historical files contain data prior to the most recent election. 
+
+- Presidential Primary Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/president_primary_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/president_primary_polls_historical.csv)
+- Presidential General Election Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/president_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/president_polls_historical.csv)
+- Senate Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/senate_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/senate_polls_historical.csv)
+- House Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/house_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/house_polls_historical.csv)
+- Governor Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/governor_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/governor_polls_historical.csv)
+- Presidential Approval Polls*: [current](https://projects.fivethirtyeight.com/polls-page/data/president_approval_polls.csv)
+- Generic Ballot Polls: [current](https://projects.fivethirtyeight.com/polls-page/data/generic_ballot_polls.csv), [historical](https://projects.fivethirtyeight.com/polls-page/data/generic_ballot_polls_historical.csv)
+
+*Historical approval polls are not available, however [The Roper Center](https://ropercenter.cornell.edu/presidential-approval/) maintains a collection of historical approval polls.
 
 ## Polling Averages