Americans' job approval rating of Congress remains low at 20 percent, an indication of possibly high party turnover in Congress seats in midterm elections, a latest USA Today/Gallup poll shows.

Americans' job approval ratings of Congress have been hovering around 20 percent since the start of this year, ranking among the lowest Gallup has measured in a midterm election year.

The Congress approval rating registered 16 percent in March, the lowest single reading in a midterm election year, just above the low from all years of 14 percent in July 2008, according to Gallup.

Low congressional approval ratings are usually associated with greater party turnover in House seats in a midterm election, and this year's low approval ratings for Congress are a potentially ominous sign for President Obama and the Democratic majority in Congress, said the survey company.

Specifically, in the five midterm elections in which Congress' approval ratings at the time of the election were below 40 percent, there was an average net change in seats of 29 from the president' s party to the opposition, said the report.

In addition to the public's negative view toward Congress, American's approval rating for President Barack Obama remains sluggish in recent months, hovering below 50 percent. Analysts believe that under the current environment, Democrats could expect to lose a significant number of House seats in November.