[2] In 1979, Hargrove earned a Bachelor of Science degree in engineering mechanics from United States Air Force Academy.

[2] On November 2, 2010, Hargrove won an election and became a Republican member of the Washington House of Representatives for District 47, Position 1.

[3] On November 6, 2012, as an incumbent, Hargrove won the election and continued serving Washington House of Representatives for District 47, Position 1.

[4] On November 4, 2014, as an incumbent, Hargrove won the election and continued serving Washington House of Representatives for District 47, Position 1.

[5] On November 8, 2016, as an incumbent, Hargrove won the election and continued serving Washington House of Representatives for District 47, Position 1.