To spend money, governments must pass bills (especially the budget). A signatory to a trust and supply agreement agrees to assist the government in passing these laws. Trust and supply agreements are more common in the demembered legislation of Scotland and Wales due to the use of proportional representation. [Citation required] The Scottish National Party and the Scottish Green Party have a confidence and supply agreement in the Scottish Parliament.  The Welsh Labour Party and Plaid Cymru had similar cooperation in the Welsh Assembly until October 2017.  Generally, in important legislation, such as the budget, support parties agree to help parties support important legislation such as the budget. In exchange, the government will agree to support the party supporting certain policies. The coalition between the Conservatives and the 2010 Lib Dem was seen within the Conservative Party as far better than a „confidence and supply pact” with the Ulster Unionists, including the DUP. . . .