Republicans, however, dismiss such polls, arguing the midterm elections will be about two main themes: Fighting the war on terror and local issues.
Our correspondent says defence spending is being squeezed in the US, and the Pentagon believes tough decisions have to be made about where the main threat lies.
But the main questions seem to be about the dangers of making decisions for political rather than scientific reasons, and the worrying lack of details, especially regarding funding.
Extremely positive results for a muscular dystrophy drug developed by Sarepta Therapeutics are being talked about as a reason the medicine might be approved even though its main trial followed only about a dozen patients.
And then also, it sounds like, obviously, the main message is going to be about the economy, but how much will he devote to foreign policy?
"That's the main thing, everyone has to be talking about it, " Davis said.
There was a macro agreement about the main issues to be addressed, including the economy, security challenges and climate change.
The main reactor building will not be pulled down until about 2100 when the radioactive levels in the building become safe.
And so I wanted to write a book that, you know, it's going to be--all the terrible things about slavery are gonna be there but in the end you know that your main character is not only gonna survive but is going to thrive.
The website will be the main vehicle for the startup to educate potential customers about solar energy.
FORBES: Startup Kiwi Uses Social Media To Sell Solar To Homeowners
"It's exciting to think that there's such an issue about this and that these could be the main factor in in this election, " Kirby said.
The main worry, though, will almost certainly be about China.
The inquest suggested the Constable of Trinity should speak to the relevant highway authority about whether parking should be permitted on the main road near the former post office.
BBC: Inquest calls for review of road after fatal Jersey crash
If the main question is going to be what do we do about Medicare costs, any proposal that Paul makes will be painted, factually, from the perspective of those who disagree with it, as cutting benefits over the long term.
WHITEHOUSE: President Obama Takes Questions at GOP House Issues Conference | The White House
My main complaint about the sunbathing afternoons proved not to be self-consciousness.
The main thing for us is to help people be better informed about their conditions and their options for dealing with them in the broader context of functional and quality life.
FORBES: Success, Social Value, and Personal Mission (Part One)
The war's main aircraft carrier, HMS Hermes, was about to be decommissioned as unsuitable for fighting Soviet submarines.
The main hub appears to be the trip timeline, which records information about each drive you had that week.
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Main Street investors trading for their own accounts should be especially careful about buying on margin into these lows.
They also appeared to be unhappy about the options provided by all three of the nation's main parties.
ECONOMIST: Local election results: A plague on all your houses | The
And while the main audience for the film is expected to be women, men are talking about the soundtrack.
Fisheries Minister Mahinda Rajapakse, a leader of the Freedom Party, wrote an open letter to the president in which he noted that the government could hardly be proud of scoring about a one-percentage-point advantage over the main opposition party after four-and-a-half years in office.
The main challenges are to expand health coverage (there are currently reckoned to be about 46m Americans without any form of medical-insurance cover) and to cut costs.
ECONOMIST: Can Barack Obama and Tom Daschle fix American health care?
If Mr Corzine wins in November, one of his main tasks (other than cleaning up state politics) will be to do something about New Jersey's locally levied property taxes, the highest in America, and another big campaign issue.
Despite Mr Obama's looser budget, about 60% of Americans think deficit reduction should be the government's main economic priority.
Though the Fed says it's still concerned about the risk of inflation, that doesn't appear to be its main concern for the moment.
The European debt crisis continues to be the main culprit behind the massive volatility in the financial markets and there is increasing concern about the possibility that it will skip across the ocean and infect U.S. banks because of the relationships between big American and European banks.
So the main message of the new study is: Doctors who use it need to be more skeptical about it.
"The main challenge is making security techniques lightweight, but apart from that people shouldn't be overly worried about security issues, " said Randell.
The Japanese game company made announcements in Japan, the United States and Europe, each one talking about the three main points everyone has been wanting to know: when will Wii U be available, how much will it cost, and what games can I play on it?
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