How I made https://democracyclub-datasette.herokuapp.com/

build.sh

csvs-to-sqlite https://candidates.democracyclub.org.uk/media/candidates-all.csv \
    --table=candidates \
    -c election \
    -f name \
    -f party_name \
    -f post_label \
    democracyclub.db

datasette publish heroku democracyclub.db \
    --name="democracyclub-datasette" \
    --title="Democracy Club" \
    --source="Democracy Club" \
    --source_url="https://candidates.democracyclub.org.uk/" \
    --license="CC-BY-SA" \
    --license_url="https://creativecommons.org/licenses/by-sa/3.0/"

Using Datasette from https://github.com/simonw/datasette

And csvs-to-sqlite from https://github.com/simonw/csvs-to-sqite

That second link should be https://github.com/simonw/csvs-to-sqlite