2012 When incumbent Senate District 22 Republican Senator Jim Putnam ran for House District 19 and left the District 19 seat open, Van Gerpen was unopposed for the June 5, 2012, Republican primary[3] and won the November 6, 2012, general election with 7,024 votes (60%) against Democratic Representative and former Senator Frank Kloucek.[4]
1996 When House District 19 incumbent Republican representative Edward Van Gerpen ran for South Dakota Senate, Bill Van Gerpen and incumbent representative Putnam were unopposed for the 1996 Republican primary,[5] in the four-way November 5, 1996, general election, Van Gerpen took the first seat with 5,236 votes (30.66%) and fellow Republican nominee Jim Putnam took the second seat ahead of Democratic nominees Susan Paul and LaVern Aisenbrey.[6]
1998 To challenge incumbent Democratic Senator Frank Kloucek, Van Gerpen was unopposed for the 1998 Republican primary but lost the November 3, 1998, general election to Senator Kloucek.[7]
2000 When incumbent representative Putnam ran for South Dakota Senate, Van Gerpen ran in the four-way June 6, 2000, Republican primary and placed first with 1,607 votes (43.5%);[8] in the four-way November 7, 2000, general election Democratic Senator Frank Kloucek took the first seat and Van Gerpen took the second seat with 5,374 votes (34.1%) ahead of fellow Republican representative Richard Wudel and Democratic nominee Wahnel Ulmer.[9]
2002 With incumbent representative Frank Kloucek running for South Dakota Senate and leaving a House District 19 seat open, Van Gerpen and Jim Putnam were unopposed for the June 4, 2002, Republican primary;[10] in the three-way November 5, 2002, general election Van Gerpen took the first seat with 5,964 votes (41.1%) and Representative Putnam took the second seat ahead of Democratic nominee Leroy Zeeb,[11] who had run for the Senate in 2000.
2004 Van Gerpen and Representative Putnam were unopposed for both the June 1, 2004, Republican primary[12] and the November 2, 2004, general election where Van Gerpen took the first seat with 6,769 votes (54.2%) and Representative Putnam took the second seat[13] after two Democratic candidates withdrew.
2008 Van Gerpen and Representative Putnam were unopposed for the June 3, 2008, Republican primary when Representative Jerke withdrew;[14] and won the five-way November 4, 2008, general election where Van Gerpen took the first seat with 5,661 votes (35.4%) and Representative Putnam took the second seat ahead of Democratic nominees Glennis Stern, Travis Lape, and independent candidate Richard Hall.[15]