Here's what we know:
* He supported Scottish independence: Connery was a vocal advocate for Scottish independence and even contributed to the "Yes" campaign during the 2014 Scottish independence referendum.
* He had mixed views on other issues: He voiced support for the Labour party at times, but also expressed skepticism about mainstream politics. He was critical of American foreign policy and had complicated views on immigration.
Therefore, it's inaccurate to say Sean Connery was a major contributor to a specific political party. He had his own views, some of which aligned with certain parties, but he never actively campaigned for any particular party.