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US President Barack Obama and Republican challenger Mitt Romney face the verdict of US voters on Tuesday after a long and bitter White House campaign, with polls showing them deadlocked in a race that will be decided in a handful of states where it is extraordinarily close.
At least 120 million US citizens are expected to vote on giving Obama a second term or replacing him with Romney. Their decision will set the country's course for four years on spending, taxes, healthcare and foreign policy challenges.
National opinion polls show Obama and Romney in a virtual dead heat, although the Democratic incumbent has a slight advantage in several vital swing states - most notably Ohio -that could give him the 270 electoral votes he needs to win.
Romney, the multimillionaire former head of a private equity fund, would be the first Mormon president and one of the wealthiest US citizens to occupy the White House. Obama, the first black president, is vying to win a second term.
Fueled by record spending on negative ads, the battle between the two men was focused primarily on the lagging economic recovery and persistent high unemployment, but at times it turned personal.
Polls will begin to close in Indiana and Kentucky at 6 pm (local time) on Tuesday, with voting ending across the country over the next six hours.
The close presidential race raises fears of a disputed outcome similar to the 2000 election, which was decided by the US Supreme Court. Both campaigns have assembled legal teams to deal with possible voting problems, challenges or recounts.
The race for the White House is pretty much back where it started. Despite some detours, the emphasis is heavily on the nation's lukewarm economy and Obama's stewardship of it.
Last week's devastating East Coast storm, the campaign debates and controversy over the deadly terrorist attack on the US Consulate in Benghazi, Libya, scrambled things a bit in the home stretch.
But as millions vote for president, Congress and thousands of state and local posts, the excruciatingly slow economic recovery and continued high joblessness were clearly weighing on their minds.
Romney, doggedly tried to keep the focus on the economy. Its poor performance on Obama's watch has been his main theme. He cites his own business background in presenting himself as the person who can heal it and restore jobs.
About the broadcaster:
CJ Henderson is a foreign expert for China Daily's online culture department. CJ is a graduate of the University of Sydney where she completed a Bachelors degree in Media and Communications, Government and International Relations, and American Studies. CJ has four years of experience working across media platforms, including work for 21st Century Newspapers in Beijing, and a variety of media in Australia and the US.