One is a shortened version of the other.

It only makes sense. Stuff the Rs say attracts voters. So, the Ds say lots of stuff the same--different words, same spin. They hope to attract some R voters. The Rs do the same hoping to attract some D voters. And to quote Vonnegut, "And so it goes."

The twparty system is leading to the death of democracy in the USA. Only thing left is which party will give the eulogy at the funeral.