Census Information - Official website of the US Census Bureau

Comptroller - State of Tennessee Comptroller

County Election Commissions - Information regarding all county Election Commission offices across the state of Tennessee

County Technical Assistance Services (CTAS) - This site has information about elected county officials. 

Division of Elections - State Election Commission

TN Legislature - Information about Tennessee State Senators, Representatives and legislation look-up program which is updated continuously.  Proposed legislation can be retrieved by Bill Number or by completing a keyword search.

Municipal Technical Advisory Service (MTAS) - This site provides detailed information for each city's charter.

TACIR - Tennessee Advisory Commission for Intergovernmental Relations.  This commission conducts research on federal, state and local government issues.

TDOT - Tennessee Department of Transportation

Tennessee.Gov - This website is the state's comprehensive website.

Tennessee Registry of Election Finance - This site is provides information about campaign finance and has a FAQ section that is very detailed.

Maps:
Congressional Districts Map (Union County is in District 3)

House Districts Map  (Union County is in District 36)

Senate Districts Map (Union County is in District 4)