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MIAMI, FL - FEBRUARY 09: Sen. Marco Rubio (R-FL) delivers remarks during the graduation of small business owners from the Goldman Sachs 10,000 Small Businesses program held at the Freedom Tower at Miami Dade College on February 9, 2015 in Miami, Florida. The Goldman Sachs 10,000 Small Businesses program helps owners in the Greater Miami area by providing them with greater access to business education, financial capital and business support services. (Photo by Joe Raedle/Getty Images)
MIAMI, FL - FEBRUARY 09: Sen. Marco Rubio (R-FL) delivers remarks during the graduation of small business owners from the Goldman Sachs 10,000 Small Businesses program held at the Freedom Tower at Miami Dade College on February 9, 2015 in Miami, Florida. The Goldman Sachs 10,000 Small Businesses program helps owners in the Greater Miami area by providing them with greater access to business education, financial capital and business support services. (Photo by Joe Raedle/Getty Images)

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    Poll: High level of "unsure" GOP voters

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Poll: High level of "unsure" GOP voters

A CNN poll shows that Republican voters are unsure about many potential 2016 candidates. Will the GOP's unknowns define themselves or disappear?

Poll: High level of "unsure" GOP voters

A CNN poll shows that Republican voters are unsure about many potential 2016 candidates. Will the GOP's unknowns define themselves or disappear?