Complex sentence: The Democrats nominated Secretary of State of West Virginia Natalie Tennant and the Republicans nominated U.S. Representative Shelley Moore Capito meaning that this was only the thirteenth U.S. Senate election that involved two major party female nominees in U.S. history.
Split into simpler sentences: The Democrats nominated Secretary of State of West Virginia Natalie Tennant and the Republicans nominated U.S. Representative Shelley Moore Capito. Consequently, this was only the thirteenth U.S. Senate election that involved two major party female nominees in U.S. history.