In politics, gridlock or deadlock or political stalemate is a situation when there is difficulty passing laws that satisfy the needs of the people. A government is gridlocked when the ratio between bills passed and the agenda of the legislature decreases. Gridlock can occur when two legislative houses, or the executive branch and the legislature are controlled by different political parties, or otherwise cannot agree.
The word "gridlock" is used here as a metaphor – referring to the traffic standstill which results when congestion causes the flow to freeze up completely.