Statistical information about this Parliaments by elections

 @doktorb
has collated this information just thought I would share it.

Number of by-elections in this parliament - 18

Number of votes cast in those 18 constituencies at the 2010 election - 770,477
Number of votes cast in those 18 constituencies at the by-elections - 501,068

Different parties and independent candidates - 73


Change in vote (total)

Conservative -- -115,657
Labour -- -91,697
Lib Dem -- -99,613
UKIP -- +37,792
Green -- +1,456
BNP -- -16,110
Respect -- +19,491

Change in vote (percentage)

Conservative -- -59.6
Labour -- -31.9
LibDem -- -67.6
UKIP -- +212.4
Green -- +32.6
BNP -- -66.2
Respect (hold yourselves, mathematics degree holders) -- +1,285


They did not stand (those who stood in 2010 but not in by-elections)

D. Wood (Independent, Barnsley C)
Workers Rev (Feltham and Heston, Manchester Central)
D. Tripathi (Independent, Feltham and Heston)
A. Khaira (Independent, Feltham and Heston)
R. Williams (Independent, Feltham and Heston)
G. Burke (Independent, Cardiff S & Penarth)
M. Sayed (Independent, Croydon North)
Socialist Equality Party (Manchester Central)
J. Cartwright (Independent, Manchester Central)
J. McTigue (Independent, Middlesbrough)
P. Thirlwall (Independent, Rotherham)
D. Stone (Independent, Eastleigh)
Third Way (Eastleigh)
TUV (Mid Ulster)
S. Kaikavoosi (Independent, South Shields)
V. Thompson (Independent, South Shields)
S. Navabi (Independent, South Shields)
R. Nettleship (Independent, South Shields)

Any increase is an increase after all award

Plaid Cymru - from 1,851 to 1,854


Lowest total vote

Peoples Democratic Party - 71
Nine Eleven Inside Job - 66
Communist League - 64
Common Good/Public Money - 64
M. Val Davies - 60
T. Darwood - 57
P. Dickson - 51
Democracy 2015 - 35
Wessex - 30
C. Bristow - 29
United Peoples - 25
Patriotic Socialist - 18


Most candidates (2010 election)

10 (Feltham and Heston, Manchester Central

Most candidates (by-elections)

14 (Eastleigh)
13 (Corby)
12 (Croydon North, Manchester Central)

Top 10 highest votes (number)

1. Labour 19,771 (Leicester South)
2. Respect 18,341 (Bradford West)
3. Sinn Féin 17,462 (Mid Ulster)
4. Labour 17,267 (Corby)
5. Sinn Féin 16,211 (Belfast West)
6. Labour 15,892 (Croydon North)
7. Labour 15,118 (Inverclyde)
8. Labour 14,724 (Barnsley Central)
9. Labour 14,718 (Oldham East and Saddleworth)
10. Conservative 14,431 (Newark)