As usual when the Legislature is in session, we are watching the Governor’s vetoes. How often have recent Governors exercised their veto?
We looked at the Regular Legislative Sessions of the last four governors, then compared the number of vetoes in the session to the number of bills that were enacted. Our comparison does not include special sessions, which happen when the Governor calls the Legislature into session to work on a specific issue or set of issues.
Governor Jane Hull took office on September 5, 1997. Her predecessor, Governor Fife Symington, had been indicted and resigned as required by state law.
1998-43rd Legislature, 2nd Regular Session, met January 12 – May 22, 1998.
12 vetoed bills plus 2 line-item vetoes. Laws 1998, Chapters 1-213, Volume 1 (PDF page 21).
Veto messages: Laws 1998, Chapters 214-End, Volume 2 (PDF page 911).
There were 303 Session Laws enacted that year. Comparing the number of bills enacted to the number of vetoes yields a veto rate of 4.6%
1999-1st Regular Session of the 44th Legislature, met January 11 – May 7, 1999.
21 vetoed bills plus 7 line-item vetoes. Laws 1999, Chapters 1-223, Volume 1 (PDF pages 23-24).
Veto messages: Laws 1999, Chapters 224-End, Volume 2 (PDF page 861).
There were 353 Session Laws enacted that year. Veto rate 7.9%
2000-2nd Regular Session of the 44th Legislature, met January 10 – April 18, 2000.
15 bills vetoed plus 4 line-item vetoes. Laws 2000, Chapters 1-170, Volume 1 (PDF pages 23-24).
Veto messages: Laws 2000, Chapters 285-End, Volume 3 (PDF page 707).
There were 405 Session Laws enacted that year. Veto rate 4.6%
2001-1st Regular Session of the 45th Legislature, met January 8 – May 10, 2001.
28 bills vetoed plus 9 line-item vetoes. Laws 2001, Chapters 1-235, Volume 1 (PDF pages 25-26).
Veto messages: Laws 2001, Chapters 236-End, Volume 2 (PDF page 1105).
There were 388 Session Laws enacted that year. Veto rate 9.5%.

2002-2nd Regular Session of the 45th Legislature, met January 14 – May 23, 2002.
9 bills vetoed. Laws 2002, Chapters 1-258, Volume 1 (PDF page 22).
Veto messages: Laws 2002, Chapters 259-End, Volume 2 (PDF page 861).*
There were 344 Session Laws enacted that year. Veto rate was 2.6%.
* It appears that the line item disputes had played out the year earlier, during the 2nd Special Session conducted between November 13 and December 19, 2001, called to address the funding formula for Limited English Proficient Students and to balance the state budget. Nine bills were enacted. Governor Hull exercised the line-item veto on 5 of them. Laws 2001, 2nd Special Session, (PDF pages 4-5).
Governor Hull’s average veto rate over 5 Regular Sessions was 5.8%.
2003-1st Regular Session of the 46th Legislature, met January 13 – June 19, 2003.
17 bills vetoed plus 4 line-item vetoes. Laws 2003, Chapters 1-247, Volume 1 (PDF pages 22-23).
Veto messages: Laws 2003, Chapters 248-End, Volume 2 (PDF page 401).
There were 268 Session Laws enacted that year. Veto rate 7.8%.
2004-2nd Regular Session of the 46th Legislature, met January 12 – May 26, 2004.
8 bills vetoed plus 2 line-item vetoes. Laws 2004, Chapters 1-205, Volume 1 (PDF page 22).
Veto messages: Laws 2004, Chapters 206-End, Volume 2 (PDF page 749).
There were 343 Session Laws enacted that year. Veto rate 2.9%.
2005-1st Regular Session of the 47th Legislature, met January 10 – May 13, 2005.
58 bills vetoed plus 3 line-item vetoes. Volume 1, Laws 2005, Chapters 1 – 226 (PDF pages 22-24).
Veto messages: Laws 2006, Chapters 265-End, Volume 2 (PDF page 777).
There were 334 Session Laws enacted that year. Veto rate 18.2%.
2006-2nd Regular Session of the 47th Legislature, met January 9 – June 22, 2006.
43 bills vetoed plus 1 line-item veto. Laws 2006, Chapters 1-264, Volume 1 (PDF page 23).
Veto messages: Volume 2, Laws 2006, Chapters 265 – End at PDF 833 (PDF page 833).
There were 395 Session Laws enacted that year. Veto rate 11.1%.
2007-1st Regular Session of the 48th Legislature, met January 8 – June 20, 2007.
22 bills vetoed. Laws 2007, Chapters 1-214, Volume 1 (PDF page 22).
Veto messages: Laws 2007, Chapters 215-End, Volume 2 (PDF page 711).
There were 296 Session Laws enacted that year. Veto rate 7.4%.

2008-2nd Regular Session of the 48th Legislature, met January 14 – 27, 2008.
32 bills vetoed. Laws 2008, Chapters 1-218, Volume 1 (PDF page 22).
Veto messages: Laws 2008, Chapters 219-End, Volume 2 (PDF page 1013).
There were 315 Session Laws enacted that year. Veto rate 10.1%.
Governor Napolitano’s average veto rate over 6 Regular Sessions was 9.5%.
Governor Janet Napolitano resigned upon her confirmation as U.S. Secretary of Homeland Security. Governor Brewer was sworn in on January 21, 2009.
2009-1st Regular Session of the 49th Legislature, met January 12 – July 1, 2009.
22 bills vetoed plus 2 line-item vetoes. Laws 2009, Chapters 1-113, Volume 1 (PDF pages 18-19).
Veto messages: Laws 2009, Chapters 114-End, Volume 2 (PDF page 608).
There were 191 Session Laws enacted that year. Veto rate 12.5%.
2010-2nd Regular Session of the 49th Legislature, met January 11 – April 29, 2010.
14 bills vetoed. Laws 2010, Chapters 1-247, Volume 1 (PDF page 22).
Veto messages: Laws 2010, Chapters 248-End, Volume 2 (PDF page 991).
There were 338 Session Laws enacted that year. Veto rate 4.1%.
2011-1st Regular Session of the 50th Legislature, met January 10 – April 20, 2011.
31 bills vetoed. Laws 2011, Chapters 1-237, Volume 1 (PDF pages 22-23).
Veto messages: Laws 2011, Chapters 238-End, Volume 2 (PDF page 1192).
There were 357 Session Laws enacted that year. Veto rate 8.6%
2012 –2nd Regular Session of the 50th Legislature, met January 9 – May 3, 2012.
26 bills vetoed. Laws 2012, Chapters 1-250, Volume 1 (PDF page 23).
Veto messages Laws 2012, Chapters 251-End, Volume 2 (PDF page 1295).
There were 362 Session Laws enacted that year. Veto rate 7.1%
2013-1st Regular Session of the 51st Legislature, met January 14 – June 14, 2013.
26 bills vetoed. Laws 2013, Chapters 1-201, Volume 1 (PDF pages 21-22).
Veto messages: Laws 2013, Chapters 202-End, Volume 2 (PDF page 740).
There were 256 Session Laws enacted that year. Veto rate 10.1%.
2014-2nd Regular Session of the 51st Legislature, met January 13 – April 24, 2014.
25 bills vetoed plus 3 line-item vetoes. Laws 2014, Chapters 1-194, Volume 1 (PDF pages 20-21).
Veto messages Laws 2014, chapters 195-End, Volume 2 (PDF page 1181).
There were 278 Session Laws enacted that year. Veto rate 10%.
Governor Brewer’s average veto rate over 6 Regular Sessions was 8.7%.
2015-1st Regular Session of the 52nd Legislature was the first session of Governor Doug Ducey. The Legislature met January 12 – April 3, 2015.
20 bills vetoed. Laws 2015, Chapters 1-200, Volume 1 (PDF page 24).
Veto messages Laws 2015, Chapters 201-End, Volume 2 (PDF page 924).
There were 324 Session Laws enacted that year. Veto rate 6.1%
2016-2nd Regular Session of the 52nd Legislature, met January 11 – May 7, 2016.
14 bills vetoed. Laws 2016, Chapters 1-202, Volume 1 (PDF page 19).
Veto messages: Laws 2016, Chapters 203-End, Volume 2 (PDF page 1549).
There were 374 Session Laws enacted that year. Veto rate 3.7%
2017-1st Regular Session of the 53rd Legislature, met January 9 – May 10, 2017.
11 bills vetoed. Laws 2017, Chapters 1-184, Volume 1 (PDF page 21).
Veto messages: Laws 2017, Chapters 185-End, Volume 2 (PDF page 1274).
There were 342 Session Laws enacted that year. Veto rate 3.2%.
2018-2nd Regular Session of the 53rd Legislature, met January 8 – May 4, 2018
23 bills vetoed. Laws 2018, Chapters 1-235, Volume 1 (PDF page 21).
Veto messages: Laws 2018, Chapters 236-End, Volume 2 (PDF page 1269).
There were 346 Session Laws enacted that year. Veto rate 6.6%.
2019-1st Regular Session of the 54th Legislature, met Session January 14 – May 28, 2019.
11 bills vetoed. Laws 2019, Chapters 1-191, Volume 1 (PDF page 23).
Veto messages: Laws 2019, Chapters 192-End, Volume 2 (PDF page 1119).
There were 321 Session Laws enacted that year. Veto rate 3.4%.
2020-2nd Regular Session of the 54th Legislature was disrupted by the COVID 19 pandemic. The Legislature met January 13, 2020 – May 26, 2020.
There were no vetoes. Laws 2020, Chapters 1-90. The only Governor’s Message was a statement regarding the budget (PDF page 809).
There were 90 Session Laws enacted that year. Veto rate 0.

2021-1st Regular Session of the 55th Legislature, met session January 11 – June 30, 2021.
28 bills vetoed. Laws 2021, Chapters 1-232, Volume 1 (PDF pages 25-26).
Veto messages: Laws 2021, Chapters 375-End, Volume 3 (PDF page 1105).
There were 447 Session Laws enacted that year. Veto rate 6.2%
2022-The official Session Laws of the 2nd Regular Session of the 55th Legislature are not yet published, but the 2022 Legislative Summary is online. The Legislature met January 10 – June 25, 2022. There were 388 Session Laws and 5 vetoes. The veto messages are among the Governor’s Letters here.
There were 388 Session Laws enacted that year. Veto rate 1.2%.
Governor Ducey’s average veto rate over 8 Regular Sessions was 3.8%.
Over more than 2 decades, Arizona Governors and Legislatures have faced an ever-changing landscape of issues and circumstances. The number of vetoes issued by each Governor varied widely. We’ll leave it to you to puzzle out the reasons.