As consumers get some welcome relief from painful gasoline prices heading into the Fourth of July holiday, President Barack Obama’s approval ratings on his handling of the economy have also taken a dip for the same reason: worsening economic conditions. Just 33 percent of Americans now believe the president is doing a “good” or “excellent” job when it comes to the economy, according to a Rasmussen poll. That’s down from 41 percent at the beginning of May, which could be yet another sign that the president’s re-election chances are tied more to the economy than to any other political issue....