The 23rd Multi-member Constituency (Bulgarian: 23-ти многомандатен избирателен район) is one of the five Bulgarian constituencies whose borders are different from the administrative division. It comprises several regions in South-West and South-East Sofia.

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In the 2009 Bulgarian parliamentary election the 23rd Multi-member Constituency – Sofia-23 elected 12 members to the Bulgarian National Assembly: 11 of which were by proportionality vote and 1 was by first-past-the-post voting.

• Through first-past-the-post voting

• Through proportionality vote

2009 election

• proportionality vote

• first-past-the-post voting^[1]

• 2009 Bulgarian parliamentary election
• Politics of Bulgaria
• List of Bulgarian Constituencies