Meaning
To swap leaders, plans or methods in the middle of an undertaking, when abandoning the old for the new is risky because the venture is only half complete. Almost always negative - don't change horses in midstream - counselling continuity through a crisis, especially against replacing a president, captain or chief executive at a critical moment. Proverbial; nearly always in the negative imperative. Carries a strong political flavour in the US, invoked for incumbents in wartime or crisis. In midstream is the standard modern wording; Lincoln's own phrasing was 'crossing streams'. Regional use: Originally US political usage (1864); now general English.
Origin
The literal practice is old: the OED's entry for the noun horse carries a 'to change horses' sense dated from 1617, with a literal citation of 1632 ('They rode all night, having twise changed horse', John Hayward). The figurative political life comes from the US election of 1864: on 9 June 1864, replying to a National Union League delegation after his renomination, Abraham Lincoln said he was reminded of 'an old Dutch farmer, who remarked to a companion once that it was not best to swap horses when crossing streams' - verified verbatim on the Dickinson College House Divided page. Two cautions for the record: the Lincoln attribution is genuinely documented, but Lincoln framed it as another man's saying, not his own coinage; and the snappy modern form don't change horses in midstream is a later compression of his wording. It became a stock campaign trope, recycled for Franklin Roosevelt in 1944 and in many elections since.
Research Sources
References used to check this entry’s meaning, history, or documented forms.
Variants
- change horses in the middle of the stream
- don't swap horses while crossing a stream
- swap horses in midstream
Usage Examples
- With the merger only halfway through, the board decided this was no time to change horses in midstream.
- Voters often rally to an incumbent during a crisis - nobody wants to change horses in midstream.
- We have committed to this platform; changing horses in midstream now would cost us months.