Both parties are testing messages for fall midterms in Tuesday 's special election . Democrats trying use Obamacare to frame the elections . Republican candidate says outside anti - Obamacare groups are drowning other candidates . Democrat is on Obamacare issue , says there 's room for improvement .
Both parties are testing messages for fall midterms in Tuesday 's special election . Republicans trying use Obamacare to frame midterm elections . Republican candidate says outside anti-Obamacare ads are drowning other issues . Democrat is confronting Obamacare debate , saying there 's room for improvement .