A strong majority say the Affordable Care Act will play an important role in their vote.
The Obama administration announced a new series of measures to get as many people as possible are covered Obamacare insurance by Jan. 1.
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Dan Mangan is a reporter covering health care for CNBC.com.
Meg Tirrell joined CNBC in April 2014 as a general assignment reporter focusing on biotechnology and pharmaceuticals.
Bertha Coombs is a general assignment reporter for CNBC, covering financial markets and business news stories.