Menu Adam R Brown

Return to the Guide to the Utah Legislature.

Senator Deidre M. Henderson
Utah legislator profile

Years served in the Utah legislature

First session in legislature: 2013
Most recent year of service for which data are available: 2020
Total sessions served in Utah House as of 2020: 0
Total sessions served in Utah Senate as of 2020: 8

How to read the statistical profile

I present a variety of statistics about Sen. Deidre M. Henderson's service in the Utah legislature. I highlight differences from chamber averages using little green and red arrows. The number of arrows is statistically determined. More arrows indicate a larger difference compared to the chamber average, in relation to how much diversity there is among legislators on this metric. If all legislators introduce exactly 5 bills, then a legislator who introduces 10 is very different; if legislators vary wildly in how many bills they introduce (but the average is still 5), then a legislator who introduces 10 bills may be less different from average. The standard deviation measures this diversity.

Sen. Henderson's statistical profile

20132014201520162017201820192020
Service summary. Service prior to 2007 (if any) is not shown here. My database goes back only to 2007.
  Chamber SenateSenateSenateSenateSenateSenateSenateSenate
  District S7S7S7S7S7S7S7S7
  Party RRRRRRRR
Leadership NoneNoneNoneNoneNoneNoneNoneNone
Years in chamber 12345678
Years comparison LowerLowerLowerLowerLowerLower====
 
20132014201520162017201820192020
Bills sponsored (learn more) Bills written and promoted by the legislator in his/her own chamber.
Introduced by Henderson 6129881196
Chamber average 10.810.611.410.110.69.610.29.7
Difference -4.8+1.4-2.4-2.1-2.6+1.4-1.2-3.7
Comparison Lower======Lower====Lower
 
20132014201520162017201820192020
Bill passage rate (learn more). What percent of Sen. Henderson's sponsored bills pass and are officially "enrolled"? (I ignore whether the governor signed or vetoted the bill.)
Bills introduced 6129881196
Bills passed 6109761096
Passage rate 100.0%83.3%100.0%87.5%75.0%90.9%100.0%100.0%
Chamber average 65.4%69.7%68.2%67.6%73.7%83.3%78.4%70.5%
Difference +34.6+13.6+31.8+19.9+1.3+7.6+21.6+29.5
Comparison HigherHigherHigherHigherHigherHigher==HigherHigherHigherHigherHigher
 
20132014201520162017201820192020
Bills floor sponsored. A "floor sponsor" is like a secondary sponsor of a bill. After a bill passes the sponsor's chamber, its sponsor needs to find a "floor sponsor" in the other chamber to usher it through the other chamber.
Total floor sponsored 1017131920172118
Chamber average 11.111.512.312.813.414.213.613.3
Difference -1.1+5.5+0.7+6.2+6.6+2.8+7.4+4.7
Comparison ==Higher==HigherHigher==HigherHigher
 
20132014201520162017201820192020
Missed votes (learn more). Usually missed votes occur because of competing obligations within the legislature, not because the legislator has left the capitol.
Missed votes 25565329599270106
Total votes held 940840951860913926975910
Absentee rate 2.7%6.7%5.6%3.4%6.5%9.9%7.2%11.6%
Chamber average 11.1%11.5%11.7%14.0%10.4%13.1%11.2%11.5%
Difference -8.4-4.8-6.1-10.6-3.9-3.2-4.0+0.1
Comparison LowerLowerLowerLowerLowerLower==Lower==
 
20132014201520162017201820192020
"Nay" votes (learn more). Most floor votes pass by overwhelming majorities, since unpopular bills get weeded out long before they reach the floor. As a result, "nay" votes are rare.
"Nay" votes 3438673520302813
Total votes held 940840951860913926975910
"Nay" rate 3.6%4.5%7.0%4.1%2.2%3.2%2.9%1.4%
Chamber average 3.7%3.6%4.8%3.7%2.8%3.2%2.7%2.5%
Difference -0.1+0.9+2.2+0.4-0.6+0.0+0.2-1.1
Comparison ==HigherHigher========Lower
 
20132014201520162017201820192020
Influence or "floor power" (learn more). What percentage of the time is the legislator on the winning side of a floor vote?
Floor power score 59.0%52.8%54.5%68.3%70.3%54.7%64.3%70.3%
Chamber average 68.6%67.3%68.5%66.8%67.9%68.2%70.2%70.9%
Difference -9.6-14.5-14.0+1.5+2.4-13.5-5.9-0.6
Comparison LowerLowerLower====LowerLowerLower==
 
20132014201520162017201820192020
Ideology score 1 (from interest group ratings). Half a dozen interest groups release ratings of each legislator after each legislative session. I rescale them all from 0 (most liberal) to 100 (most conservative) and average them together, resulting in the numbers reported here.
Average rating 76.9nanananananana
Chamber average 64.3nanananananana
Difference +12.6nanananananana
Comparison Highernanananananana
 
20132014201520162017201820192020
Ideology score 2 (NOMINATE method) (learn more). Using a widely accepted scaling method, I calculate each legislator's ideology score (called a "NOMINATE" score) after each legislative session. I describe the method here. Scores have no intrinsic meaning; they are useful only for comparing two legislators. A legislator with a higher score is more to the right ideologically of a legislator with a lower scale. In most years, a conservative Republican will have a score above 0; a score close to 100 is extreme.
NOMINATE score 60.987.487.184.162.187.889.765.8
Chamber average 24.932.626.235.725.423.741.634.7
Difference +36.0+54.8+60.9+48.4+36.7+64.1+48.1+31.1
Comparison HigherHigherHigherHigherHigherHigherHigherHigherHigherHigher
 
20132014201520162017201820192020
Party support score (overall) (learn more). How consistently does Sen. Henderson support his/her party? That is, what percentage of the time does the legislator vote with the majority of the other members of his/her party? Scores are usually easily above 90%.
Score (overall) 97.4%95.4%93.0%96.6%97.9%97.2%96.9%98.6%
Chamber average 97.0%96.7%95.9%97.1%97.8%97.3%98.1%98.2%
Difference +0.4-1.3-2.9-0.5+0.1-0.1-1.2+0.4
Comparison ==LowerLower======LowerHigher
 
20132014201520162017201820192020
Party support score (party-line only) (learn more). This is the same as the "raw" party support score, but we look only at party-line votes when calculating this. A "party-line" vote occurs when the majority of Democrats votes against the majority of Republicans. Although party-line votes are rare, looking at the legislator's party support score in this setting can be revealing.
Score (party-line only) 92.0%82.1%75.8%92.3%90.6%95.7%86.0%100.0%
Chamber average 85.0%84.1%82.5%87.1%86.4%85.4%91.8%90.9%
Difference +7.0-2.0-6.7+5.2+4.2+10.3-5.8+9.1
Comparison Higher==LowerHigherHigherHigherLowerLowerHigherHigher

Votes on Sen. Henderson's bills

Many votes have been held on bills sponsored by Sen. Henderson. In the interest of space, I display only the most and least divisive votes held on Sen. Henderson's bills.

Sen. Henderson's most divisive bills

Listed below are the 10 votes on bills sponsored by Sen. Henderson that had the closest vote margin (as a percent of the total votes cast). When there are ties, I list the most recent bills first.

Year Sponsor Bill Ayes Nays Margin
(as % of total votes)
Type of vote
2020 Henderson SB0119S03 29 41 17.1% House/ substitute adoption failed from # 3 to # 4
2013 Henderson SB0283 46 25 29.6% House/ passed 3rd reading
2015 Henderson SB0169 21 8 44.8% Senate/ passed 3rd reading
2019 Henderson SB0151S03 54 16 54.3% House/ passed 3rd reading
2015 Henderson SB0169 58 16 56.8% House/ passed 3rd reading
2019 Henderson SB0151S03 22 6 57.1% Senate/ passed 2nd reading
2015 Henderson SB0169 19 5 58.3% Senate/ passed 2nd reading
2013 Henderson SB0070 59 14 61.6% House/ passed 3rd reading
2016 Henderson SB0108S01 23 3 76.9% Senate/ passed 2nd reading
2019 Henderson SB0071S03 26 3 79.3% Senate/ passed 2nd reading

Sen. Henderson's least divisive bills

Listed below are the 10 votes on bills sponsored by Sen. Henderson that had the widest vote margin (as a percent of the total votes cast). When there are ties, I display the most recent bills first.

Year Sponsor Bill Ayes Nays Margin
(as % of total votes)
Type of vote
2020 Henderson SB0169 69 0 100.0% House/ passed 3rd reading
2020 Henderson SB0169 26 0 100.0% Senate/ passed 3rd reading
2020 Henderson SB0169 18 0 100.0% Senate/ passed 2nd reading
2020 Henderson SB0147S01 66 0 100.0% House/ passed 3rd reading
2020 Henderson SB0147S01 25 0 100.0% Senate/ passed 3rd reading
2020 Henderson SB0147S01 23 0 100.0% Senate/ passed 2nd reading
2020 Henderson SB0143 71 0 100.0% House/ passed 3rd reading
2020 Henderson SB0143 26 0 100.0% Senate/ passed 3rd reading
2020 Henderson SB0143 24 0 100.0% Senate/ passed 2nd reading
2020 Henderson SB0119S03 27 0 100.0% Senate/ concurs with House amendment