Kristin Elise Oblander (1969-) was born in Fort Walton Beach, Florida. Her parents, Lewis "Dale" Oblander (1943-) and Marcia Michael (1946-), were married in 1964. The family later moved to Atlanta, Georgia, and Oblander graduated from Henderson High School in DeKalb County, Georgia. She graduated from the Georgia Institute of Technology with a Bachelor of Science in Management in 1991. She began her political career working as an administrative assistant for the Democratic Party of Georgia (DPG) in 1994 and was promoted to Special Projects Director in 1996, where she supervised three Democratic fundraising clubs and coordinated the annual "Jefferson-Jackson Dinner." While working for the DPG, Oblander served as Georgia’s Arrangements Chair for the 1996 Democratic National Convention in Chicago. In 1997, she was hired as Finance Director for the Roy Barnes (1948-) campaign for Georgia Governor, which broke all previous campaign fundraising records in Georgia.

In February 1999, she founded The Oblander Group, a political fundraising consulting firm. Initial clients included Roy Barnes, the DPG, the Georgia Trial Lawyers Association, the Georgia State Senate Democratic Caucus, and Senator Charles W. Walker (1947-). The Oblander Group later collaborated on and organized fundraising events for the Democratic National Committee (DNC) and various political campaigns, including those of Representative John Lewis (1940-2020), Georgia Public Service Commissioner David Burgess, Georgia Senate Majority Leader Charles W. Walker, Georgia House Majority Leader Larry Walker (1942-), Atlanta Mayor Kasim Reed (1969-), Representative Nikema Williams (1978-), and others. Oblander joined the 2004 John Kerry for President campaign as Southern Finance Director. From 2006 to 2011, she served as the DNC Southeastern Finance Director, responsible for "Victory '08" fundraising events with Barack Obama (1961-), Joseph Biden (1942-), DNC Chairman Howard Dean (1948-), and other officials. In 2013, Oblander married William "Bill" Sengstacken. As of 2024, she remains President of The Oblander Group.