The Associated Press has raised the issue of contributions by Cannon & Dunphy to Chief Justice Abrahamson. I think its a nonissue.
Lawyers are going to contribute to judicial campaigns. They ought to. They presumably are specially interested in the administration of justice and in a strong position to evaluate the candidates.
The state supreme court is a collegial law developing court. The justices should be reluctant to recuse themselves because to do so will deprive the voters of the state of one of the people elected to resolve our state's most important legal disputes.
It does not surprise me that lawyers at Cannon & Dunphy would contribute to the Chief Justice. It is not, however, that they hope to influence her to vote in a way that she otherwise would not. It's far more likely that they find her judicial philosophy - which is more favorable to plaintiffs in tort cases - preferable to those of others, including, perhaps, Judge Koschnick.
Part of this is that it serves the firm's economic interest (although I suspect tht these lawyers also believe that such a philosophy reflects a better reading of the law and good policy), to be sure, but that is their motivation and not the Chief Justice's. She is more inclined to interpret the law in a way that shifts losses to parties that she believes are better able to bear them and tends to be more concerned with the adequacy of compensation than its costs.
Of course this doesn't mean that she is going to find for the plaintiff in every case or that those who take a different view are always going to find for the defendant. It just means that there are differences of opinion on these matters and that persons interested in judicial races are smart enough to figure those out and act accordingly.
Should she disclose the contributions? I suppose, although they are matters of public record and, if she did disclose them, she (and every other justice) ought to be very careful about recusal. If she truly believes that she can approach the case impartially (and she does), then she ought to hear it.