Excessive corporate influence over decision-making in politics is a serious problem in many regions of the world. Companies, either directly or through trade associations that they are a member of, donate money to politicians who they perceive as likely to favour their interests (or to push them to do so). Frequently, donations and lobbying activities run counter to the declared beliefs of those same companies - for example, companies that are climate champions in public but privately donate funds to climate deniers or lobby to water down public interest regulations.
On donations specifically, there is a question whether corporate money has any place in the political system at all, but there can be little doubt that there is too much of it there at the moment. In the US, the top 10 donors alone in the 2018 election cycle contributed almost half a billion dollars.
This is not about influencing whether money flows to liberal or conservative parties; this is about eliminating the ability of companies to undermine the public good and decide the outcomes of elections.