Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Americans Vote in Congressional Elections VOA News 02 November 2010 Early ballots are await counting at the Maricopa County Recorders office in Phoenix, 01 Nov 2010 Photo: AP Early ballots are await counting at the Maricopa County Recorders office in Phoenix, 01 Nov 2010 Americans are voting Tuesday in midterm congressional elections that experts say will probably give Republicans control of at least one chamber of Congress.  President Barack Obama left the last day of campaigning to the candidates Monday, returning to the White House after a campaign blitz through critical battleground states, to await what could be a dismal outcome for his Democratic party. A new poll Monday indicated that Republicans have a more commanding lead than either party has had before a midterm vote since 1974. The USA Today/Gallup survey said 55 percent of the 1,500 people asked say they plan to support Republicans in the elections. Analysts are expecting Republicans to make enough gains to take control of the House of Representatives, but to fall short of winning a majority in the Senate. Democrats currently control both houses of Congress. The economy remains the main source of trouble for Democrats.  At stake Tuesday are all 435 seats in the House of Representatives and 37 of the 100 seats in the Senate. A number of states also are holding votes for governorships, local officials and ballot measures. Republican leaders say the political energy and momentum is on their side this year, just as it was with the Democrats in 2006 and 2008. Republican gains would make it more difficult for President Obama to win approval for his legislative initiatives. Republicans campaigned in opposition to Mr. Obama's economic stimulus and health care legislation and are vowing to cut taxes and reduce spending.  Mr. Obama and the Democrats said their actions prevented a more severe economic downturn, and provided health care coverage for millions of uninsured Americans. During an appearance in Ohio Sunday, Mr. Obama blamed the current economic sluggishness and high unemployment rate on mistakes made by the previous Republican administration of George W. Bush.  The White House says regardless of the outcome of this or any other U.S. election, the voting is a powerful example to the world of the American people exercising their constitutional responsibilities and living up to the nation's framework of government by the people. Some information for this report was provided by AP and AFP. .