Washington Post, please define “downward pull”

Today's Washington Post:

Although many states won't hold primaries until next month, Obama has appeared at only one campaign rally this year -- for Martha Coakley, who lost a special Senate election in Massachusetts. He has held no big events in any number of states -- including Pennsylvania, Louisiana and Ohio -- with competitive races.

The political calculations are driven in part by Obama's overall approval rating, which has stayed at 53 percent in Washington Post-ABC News polls for several months.

...

In the anti-establishment climate, some Democrats are saying that it's smart for Obama to keep his distance from candidates in difficult races, allowing them to run against Washington and avoid the downward pull of his approval ratings.

Is the Washington Post under the impression that a 53 percent approval rating is bad?