Complex sentence: In the November 2 election, DesJarlais defeated Davis, 57% -38%, the second-largest margin of defeat for a Democratic incumbent in the 2010 cycle, making DesJarlais the first challenger to oust an incumbent since the 4th District was created in 1982.
Split into simpler sentences: In the November 2 election, DesJarlais defeated Davis, 57% -38%, the second-largest margin of defeat for a Democratic incumbent in the 2010 cycle. DesJarlais is also the first challenger to oust an incumbent since the 4th District was created in 1982.