in a parliamentary system from where are cabinet members drawn
Cabinet (government) In parliamentary democracies, several policies exist: cabinet members must, must not, or may be members of parliament, depending on the country. In the United Kingdom, cabinet ministers are mandatorily appointed from among sitting members of the parliament. In countries with a strict separation between the executive and legislative branches of government, e.g. Luxembourg, Switzerland and Belgium, cabinet members have to give up their seat in parliament. The intermediate case is when ministers typically are members of parliament, but are not required to be, as in e.g. Finland. The candidate prime minister and/or the president selects the individual ministers to be proposed to the parliament, which may accept or reject the proposed cabinet composition. Unlike in a presidential system, the cabinet in a parliamentary system must not only be confirmed, but enjoy the continuing confidence of the parliament: a parliament can pass a motion of no confidence to remove a government or individual ministers. Often, but not necessarily, these votes are taken across party lines.
Leader of the House of Commons The Leader of the House of Commons is generally a member of the Cabinet of the United Kingdom who is responsible for arranging government business in the House of Commons. However, the current incumbent, Andrea Leadsom, is not a member of the cabinet but does attend cabinet meetings.[1] This office does not attract a ministerial salary,[2] and as such it is usually held jointly with another ministerial position (often a sinecure). Historically, the position was usually held by the Prime Minister if they sat in the House of Commons; in more recent years, the post has been held jointly with that of Lord President of the Council, Lord Privy Seal, or First Secretary of State.