| Vale of Glamorgan Welsh: Bro Morgannwg|label=none | |
| Constituency Type: | Senedd borough constituency |
| Parl Name: | Senedd |
| Year: | 1999 |
| Member Label: | MS |
| Member: | Jane Hutt |
| Party Label: | Party |
| Party: | Welsh Labour |
| Parts Label: | Preserved county |
| Parts: | Mid Glamorgan South Glamorgan |
Vale of Glamorgan (Welsh: Bro Morgannwg) is a constituency of the Senedd. It elects one Member of the Senedd by the first past the post method of election. Also, however, it is one of eight constituencies in the South Wales Central electoral region, which elects four additional members, in addition to eight constituency members, to produce a degree of proportional representation for the region as a whole.
The constituency was created for the first election to the Assembly, in 1999, with the name and boundaries of the Vale of Glamorgan Westminster constituency. It is partly within the preserved county of Mid Glamorgan and partly within the preserved county of Glamorgan.
The other seven constituencies of the region are Cardiff Central, Cardiff North, Cardiff South and Penarth, Cardiff West, Cynon Valley, Pontypridd and Rhondda.
In general elections for the Senedd, each voter has two votes. The first vote may be used to vote for a candidate to become the Member of the Senedd for the voter's constituency, elected by the first past the post system. The second vote may be used to vote for a regional closed party list of candidates. Additional member seats are allocated from the lists by the d'Hondt method, with constituency results being taken into account in the allocation.
Regional ballots rejected at the count: 233[1]
2003 Electorate: 68,947
Regional ballots rejected: 172
1999 Electorate: 67,577