This article aims at understanding the policy-making process by examining the relationship between access to policy-makers and lobbying success. I collect unique large-scale textual data on the content of lobbying activities and their subsequent policy changes. I identify instances of lobbying success with two complementary approaches: one based on a plagiarism-detection algorithm and the other on GPT. I match this novel data with meetings held between policy-makers and interest representatives to measure access to policy-makers. It reveals notable disparities in access, with the business sector having more access to policy-makers than the civil society. Moreover, I find that access to policy-makers is associated with a higher likelihood of lobbying success, by 11 percent of one standard deviation. This increased success likelihood is larger for entities with more access, as measured by the number of meetings they have. Distinguishing access to policy-makers contemporaneously or before the discussions on a policy, I find that prior access to policy-makers is also associated with higher chances of success. It suggests that reputation and connection-building play a critical role. These results are driven by the business sector, composed of companies and business associations. It indicates that in addition to having more access to policy-makers and being better politically connected, companies and business associations derive greater benefits from these connections. In contrast, NGOs with access to policy-makers do not display an increased probability of success.