Complex sentence: Between 1999 and 2000, over a span of fourteen months, Haddock famously walked across the continental United States to advocate campaign finance reform and in 2004 ran unsuccessfully as a Democratic challenger to incumbent Republican Judd Gregg for the U.S. Senate.
Split into simpler sentences: Between 1999 and 2000, over a span of fourteen months, Haddock famously walked across the continental United States to advocate campaign finance reform. In 2004 ran unsuccessfully as a Democratic challenger to incumbent Republican Judd Gregg for the U.S. Senate.