| Year | Rep/Lean Rep | Dem/Lean Dem |
|---|---|---|
| 1992 | ||
| 1994 | 50 | 40 |
| 1995 | 50 | 41 |
| 1996 | 49 | 44 |
| 1997 | 50 | 42 |
| 1998 | 47 | 42 |
| 1999 | 49 | 41 |
| 2000 | 48 | 41 |
| 2001 | 51 | 39 |
| 2002 | 51 | 39 |
| 2003 | 50 | 41 |
| 2004 | 49 | 43 |
| 2005 | 49 | 43 |
| 2006 | 45 | 45 |
| 2007 | 43 | 46 |
| 2008 | 45 | 45 |
| 2009 | 45 | 45 |
| 2010 | 50 | 39 |
| 2011 | 51 | 39 |
| 2012 | 52 | 41 |
| 2013 | 53 | 40 |
| 2014 | 50 | 41 |
| 2015 | 54 | 38 |
| 2016 | 54 | 38 |
| 2017 | 53 | 41 |
- Report
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