| Year | Rep/Lean Rep | Dem/Lean Dem |
|---|---|---|
| 1992 | ||
| 1994 | ||
| 1995 | ||
| 1996 | ||
| 1997 | ||
| 1998 | ||
| 1999 | ||
| 2000 | ||
| 2001 | ||
| 2002 | ||
| 2003 | ||
| 2004 | ||
| 2005 | ||
| 2006 | ||
| 2007 | 31 | 59 |
| 2008 | 28 | 66 |
| 2009 | 25 | 66 |
| 2010 | 29 | 63 |
| 2011 | 25 | 62 |
| 2012 | 29 | 62 |
| 2013 | 30 | 61 |
| 2014 | 31 | 60 |
| 2015 | 31 | 60 |
| 2016 | 26 | 64 |
| 2017 | 28 | 63 |
- Report
|
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