(thehill) President Barack Obama struck a hyperpartisan note Thursday, telling Democrats that he was "amused" by the Tax Day Tea Party rallies.

Obama, addressing a Democratic National Committee (DNC) fundraiser in Miami, did little to endear himself to the Tea Party groups protesting around the country, saying "they should be saying thank you" because of the tax cuts he has signed into law.

The president went as far as to say that this week's special election in Florida, which was won by Democrat Ted Deutch, was portrayed by Republicans as "a referendum on healthcare, a referendum on the stimulus." "And you know what, it was," Obama said to applause.

Obama continued to dare Republicans to run on a platform of repealing healthcare reform, telling the audience "they won't be very successful."

Despite the president's confidence, DNC Chairman Tim Kaine told the crowd that they should assume that Democrats are "running into a headwind" in the November midterms.

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