52% blamed Biden, 26% blamed Trump and 26% blamed Congressional Republicans. That's 104%.
That aside, you absolutely want to reach out to that 52% who blamed Trump or Congressional Republicans.
Given the nature of the question, I expect there's a fair amount of overlap there so you can't just add the two together. (For example, someone could say that Trump was a great deal to blame and congressional Republicans were somewhat to blame, but that's still one person.) So we're looking at probably around a quarter of Republican voters who would be against the shenanigans this week and of those, how many would actually be reachable to switch? 5%, tops?