Here you can download the IPD indices for PPDB Round 1a. This data set includes data on 122 parties from 20 countries. A full list of all included countries can be found  here: https://www.politicalpartydb.org/countries/.

Soon you will be able to download the IPD indices for PPDB Round 1b here.

Here you can download the IPD indices for PPDB Round 2. This data set includes data on 274 parties from 51 countries. A detailed description of the data can be found here.