Each network shows early day motion cosponsorships in the U.K. House of Commons.

The data cover years 1989—2015 and are split by general elections. Amendments to the motions are not included.

All networks are directed graphs drawn with the Fruchterman-Reingold force-directed algorithm. The ties connect the primary sponsor of one or more early day motion(s) to his or her systematic cosponsors (read below). The nodes are sized by unweighted total degree. When two nodes belong to the same group, any existing tie between them is given the color of that group. There is a guide to party codes and colors at the end of this page.

The graphs are subset to systematic cosponsorship ties by using the weighted propensity to cosponsor (WPC) scheme by Gross, Kirkland and Shalizi. The graphs show only ties for which the WPC is equal to 1, which corresponds to the situation where a Member of Parliament has cosponsored all early day motions by another one.

Similar graphs are available for other countries.

2015—
2010—2015
2005—2010
2001—2005
1997—2001
1992—1997
1989—1992 (missing 1987–1988)

Party groups

UKIP

United Kingdom Independence Party, purple

CON

Conservative Party, blue

LD

Liberal Democrats, orange

LAB

Labour Party, red

R

Respect Party, dark red

G

Green Party, green

W-PLAID

Wales: Plaid Cymru, light green

NI-ALL

Northern Ireland: Alliance Party, light yellow

NI-DUP

Northern Ireland: Democratic Unionist Party, magenta

NI-UUP

Northern Ireland: Ulster Unionist Party, dark blue

NI-SDLP

Northern Ireland: Social Democratic and Labour Party, dark green

NI-UKUP

Northern Ireland: United Kingdom Unionist Party, light blue

S-LAB

Scotland: Scottish Labour Party, light red

S-SNP

Scotland: Scottish National Party, yellow

IND

Independent or unaffiliated, light grey