Chris Stirewalt of Fox News peruses new poll numbers and offers some interesting electoral analysis.

It’s never been worse for President Obama in the Washington Post/ABC News poll, which finds him at a 41 percent job approval rating, about 13 points below his standing in the poll at this time in 2010, the year when his party got creamed in midterm elections. We’ve talked about the tsunami alert for Democrats this fall, but the sirens are getting too loud even for partisans and wishful thinkers on the left to ignore. There is no common measure so predictive of a party’s performance in congressional races than the job approval rating of a president of the same party. And Obama is looking increasingly like a toxic asset for Democrats desperate to cling to a Senate majority. …

… The Washington Post/ABC News poll was heralded by Democrats last month when it showed opposition to ObamaCare softening and the nation evenly divided on the law. That has evaporated. Support for the law dropped 5 points, while opposition remained firm. Why? Fifty-eight percent of respondents said ObamaCare is causing overall health costs in the country costs to rise, but a worse harbinger for Democrats this fall: 47 percent of respondents said the law will increase their own health costs, while just 8 percent said they would pay less because of the law. …

… Even as the poll shows voters agreeing with Democrats on key issues like increasing the minimum wage and even the overall subject of health care, one statistic explains why the majority party may be in even worse trouble than 2010, and it’s all about Obama: “Registered voters by 53-39% say they’d rather see the Republicans in control of Congress as a counterbalance to Obama’s policies than a Democratic-led Congress to help support him.” The main aim of voters would appear to be to block the president’s agenda, which is kind of the GOP’s whole jam these days.