In the history of American politics, at least since the politics simmered down to just two parties having any say in things, the word "bipartisan support" has come to mean having majority support by both major parties. For example the VA Website Accessibility Act of 2018 which passed the House 387-0 (and then was ignored by the Senate). Recently, some politicians have perverted that to mean that if they had just one vote from the opposition it was "bipartisan", or even worse, they put "bipartisan" in the bill title (e.g. - Bipartisan Enhanced Background Check Bill of 2019, a bill that ended up with 0 Republican votes).
But you can go ahead with your own definitions. We will just keep in mind that when you post you are often speaking politics, not English.