The normal Twitter's API only retrieves about 1% of all available tweets. Although you can retrieve the whole Twitter's timeline with with a special Twitter's API called Firehose, but it is super expensive and only available to a few companies. In this document, Jason Baumgartner mathematically shows the feasibility of reconstructing 99% of Firehose. He also urges the researchers to join forces and collect Twitter's data and make that data available to all researchers.
@imuhammad more useful: urge researchers to abandon Twitter and help destroy their monopoly on political life.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon! Anyone with an @utwente.nl or @*.utwente.nl email address can create an account on mastodon.utwente.nl.