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Senator Peter C. Knudson
Utah legislator profile

Years served in the Utah legislature

First session in legislature: 1995
Most recent year of service for which data are available: 2018
Total sessions served in Utah House as of 2018: 4
Total sessions served in Utah Senate as of 2018: 19

How to read the statistical profile

I present a variety of statistics about Sen. Peter C. Knudson'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. Knudson's statistical profile

Service summary. Service prior to 2007 (if any) is not shown here. My database goes back only to 2007.
  Chamber SenateSenateSenateSenateSenateSenateSenateSenateSenateSenateSenateSenate
  District S17S17S17S17S17S17S17S17S17S17S17S17
Leadership NoneNoneNoneAsstWhipAsstWhipAsstWhipAsstWhipAsstWhipAsstWhipAsstWhipAsstWhipAsstWhip
Years in chamber 8910111213141516171819
Years comparison HigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigher
Bills sponsored (learn more) Bills written and promoted by the legislator in his/her own chamber.
Introduced by Knudson 181481214101354363
Chamber average
Difference +8.4+4.2-1.0+3.1+3.4+0.2+2.2-5.6-7.4-7.1-4.6-6.6
Comparison HigherHigherHigher==HigherHigher==HigherLowerLowerLowerLowerLowerLowerLower
Bill passage rate (learn more). What percent of Sen. Knudson's sponsored bills pass and are officially "enrolled"? (I ignore whether the governor signed or vetoted the bill.)
Bills introduced 181481214101354363
Bills passed 111268991042352
Passage rate 61%86%75%67%64%90%77%80%50%100%83%67%
Chamber average 63%68%63%69%70%72%65%70%68%68%74%83%
Difference -1.5+18+12-1.6-6.2+18+12+10-18.2+32+9.3-16.3
Comparison ==HigherHigher====HigherHigherHigherLowerHigherHigherHigherLower
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 2219161417162412151085
Chamber average 121111111112111112131314
Difference +10+7.5+4.9+3.0+5.6+4.2+13+0.5+2.7-2.8-5.4-9.2
Comparison HigherHigherHigherHigherHigherHigherHigherHigherHigher======LowerLower
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 18291783553827765368411180
Total votes held 820806807786940890940840951860913926
Absentee rate 2.2%3.6%22%4.5%5.6%9.2%8.2%7.7%3.8%9.8%12%8.6%
Chamber average 8.9%9.6%11%12%14%9.9%11%12%12%14%10%13%
Difference -6.7-6.0+11-7.4-8.8-0.7-2.9-3.8-7.9-4.2+1.6-4.5
Comparison LowerLowerHigherHigherLowerLower==LowerLowerLowerLower==Lower
"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 7171518152120162718914
Total votes held 820806807786940890940840951860913926
"Nay" rate 0.9%2.1%1.9%2.3%1.6%2.4%2.1%1.9%2.8%2.1%1.0%1.5%
Chamber average 4.1%4.1%4.1%4.6%3.4%4.8%3.7%3.6%4.8%3.7%2.8%3.2%
Difference -3.2-2.0-2.2-2.3-1.8-2.4-1.6-1.7-2.0-1.6-1.8-1.7
Comparison LowerLowerLowerLowerLowerLowerLowerLowerLowerLowerLowerLowerLowerLower
Winning side rate (learn more). What percentage of the time (excluding near-unanimous votes) is the legislator on the winning side of a floor vote?
Winning side rate 95%86%83%94%87%90%80%80%81%83%91%79%
Chamber average 70%69%70%70%72%70%69%67%68%67%68%68%
Difference +25+17+14+24+15+20+11+12+13+16+24+11
Comparison HigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigherHigher
Ideology score (NOMINATE method) (learn more). Using W-NOMINATE algorithm developed by Congressional scholars, I calculate each legislator's relative ideology after each General Session. I describe the method here. Scores have no intrinsic meaning. They are only relative: A legislator with a higher score is to the right ideologically of a legislator with a lower scale. Scores may be compared only within a single chamber and a single year. In most years, a conservative Republican will have a score above 0; a score close to 100 is extreme.
Contact me for scores. They get misinterpreted often enough that I now provide them only to political scientists.
Party support score (overall) (learn more). How consistently does Sen. Knudson 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) 98%98%98%99%99%98%98%98%97%98%99%99%
Chamber average 97%97%97%97%98%96%97%97%96%97%98%97%
Difference +1.3+1.0+0.4+1.4+0.8+1.8+1.3+1.5+1.5+1.1+1.1+1.2
Comparison HigherHigher==HigherHigherHigherHigherHigherHigherHigherHigherHigher
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) 73%80%91%90%90%90%82%87%85%84%92%89%
Chamber average 83%85%89%89%91%88%85%84%83%87%86%85%
Difference -10.1-5.2+1.2+1.2-1.1+2.3-3.0+2.4+2.3-3.1+5.6+4.0
Comparison LowerLowerLower================HigherHigher

Votes on Sen. Knudson's bills

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

Sen. Knudson's most divisive bills

Listed below are the 10 votes on bills sponsored by Sen. Knudson 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
2007 Knudson SB0029 36 32 5.9% House/ failed
2013 Knudson SB0023S01 33 38 7.0% House/ failed
2009 Knudson SB0218 31 40 13% House/ failed
2009 Knudson SB0079S03 16 12 14% Senate/ pass 2nd
2012 Knudson SB0019S02 29 42 18% House/ failed
2012 Knudson SB0040S05 20 9 38% Senate/ passed 2nd reading
2009 Knudson SB0218 49 22 38% House/ passed 3rd reading
2017 Knudson SB0056 19 7 46% Senate/ passed 3rd reading
2007 Knudson SB0146S01 7 19 46% Senate/ failed
2010 Knudson SB0209 53 19 47% House/ passed 3rd reading

Sen. Knudson's least divisive bills

Listed below are the 10 votes on bills sponsored by Sen. Knudson 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
2018 Knudson SJR007 27 0 100% Senate/ concurs with House amendment
2018 Knudson SJR007 67 0 100% House/ passed 3rd reading
2018 Knudson SJR007 26 0 100% Senate/ passed 3rd reading
2018 Knudson SJR007 23 0 100% Senate/ passed 2nd reading
2018 Knudson SCR015 65 0 100% House/ passed 3rd reading
2018 Knudson SCR015 24 0 100% Senate/ passed 2nd & 3rd readings/ suspension
2017 Knudson SJR012 71 0 100% House/ passed 3rd reading
2017 Knudson SJR012 26 0 100% Senate/ passed 3rd reading
2017 Knudson SCR010 26 0 100% Senate/ concurs with House amendment
2017 Knudson SCR010 68 0 100% House/ passed 3rd reading