Link to article: here. Key passage:
Perhaps most worrisome for Democrats is what’s going on in Wisconsin. Republican Sen. Ron Johnson’s re-election campaign looked all but dead. The powerful Koch brothers pulled money out of the state as Democrat Russ Feingold consistently led in the polls. But two new polls this week showed Johnson trailing by just 2 or 3 percentage points, and a third gave Johnson a lead, despite Clinton’s advantage in the state seeming to grow....ADDED: It makes perfect sense to me. The more clear it seems that Clinton will win, the more important it becomes to those who worry about her that she should be offset and balanced by a Republican-led Congress. It seems really risky to empower a President Trump with a same-party Congress, but once he's not a threat, the risk-averse among us should gravitate toward a Republican Congress to put a brake on President Clinton.