(CNN) - New polls show pluralities of Americans support the same-sex marriage decisions handed down last week by the U.S. Supeme Court.
A USA Today poll released Monday indicates that 48% of the public favors the high court ruling Wednesday that threw out part of the 1996 Defense of Marriage Act (DOMA), which denied hundreds of federal benefits to same-sex couples, with 43% opposed. According to the survey, those who feel strongly about the issue split 29%-29% on the 5-4 ruling by the justices.
At the same time, the Supreme Court declined to make a sweeping statement on the broader issue of same-sex marriage rights nationwide. By another 5-4 ruling, the justices rejected California's same-sex marriage ban but left in place laws banning such marriages in 35 other states.
Asked about both decisions, 45% of respondents in a Pew survey released Monday said they approved of the court rulings. Forty percent disapproved. In all, 66% of those polled by Pew had heard about the Supreme Court rulings on same-sex marriage.
According to the USA Today poll, which was conducted in the four days following the Supreme Court rulings, 55% say that marriages between same-sex couples should be recognized by law, with four in ten opposed. The 55% figure is an all-time high in USA Today polling. Fifty-five percent of Americans questioned in a CNN/ORC International poll conducted prior to the high court rulings also supported same-sex marriage, up 15 points since 2007.
The only major groups in the USA Today poll where a majority opposed same-sex marriage are Republicans (68%) and those 65 and older (51%).
Similarly, Pew's survey found 49% of people over age 65 disapproved of the Supreme Court's ruling. Sixty-one percent of Democrats sided with the court's decision, while 63% of Republicans did not.
Other findings from the USA Today survey indicate that by a 49%-40% margin, Americans oppose the Supreme Court ruling last week to strike down a portion of the Voting Rights Act that required some states to get federal approval to change election laws. Two-thirds of black Americans questioned opposed the decision. The Voting Rights Act was passed in 1965 to prevent some state and local governments from using rules and procedures which prevented many black Americans from voting. The key enforcement provision of the measure was reauthorized in 2006 for another 25 years.
The Pew survey found only 34% of Americans knew that part of the Voting Rights Act had been struck down last week.
The country appears divided on how the high court's doing its job, with 43% approving and 44% giving it a thumbs down. That's the lowest level of approval in USA Today polling in eight years.
The USA Today poll was conducted by Princeton Survey Research Associates, with 1,003 adults nationwide question by telephone June 27-30. The survey's overall sampling error is plus or minus 3.6 percentage points.
The Pew survey was conducted by telephone from June 27-30 from 1,003 adults. The sampling error was plus or minus 3.7 percentage points.
CNN Political Editor Paul Steinhauser and CNN's Kevin Liptak contributed to this report