FILE - This combination of file photos shows Missouri U.S. Senate candidates in the November election, Democratic incumbent Sen. Claire McCaskill, left, and her Republican challenger Josh Hawley. In ads and speeches, McCaskill is pounding Missouri voters with a single message: Her Republican challenger wants to end health insurance protections for people with pre-existing conditions. Hawley, says it's not true and has been forced to defend himself. (AP Photo/Jeff Roberson, File)
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