MADISON, Wis. (AP) — Republican Gov. Scott Walker’s approval rating is at 41 percent, the lowest in the three-year history of the Marquette University Law School poll. The poll released Thursday shows 56 disapprove of the job Walker’s doing. His approval rating was 49 percent in October. The poll also shows that 52 percent support Democrat Hillary Clinton over 40 percent for Walker should they face each other for president. Clinton has announced her candidacy while Walker has not. And 34 percent say Walker should run for president, while 62 percent say he should not. The poll also found Democrat Russ Feingold ahead of Republican Sen. Ron Johnson 54 percent to 38 percent. The poll of 803 registered voters between April 7 and April 10 has a margin of error of 3.5 percentage points.