Definition of "horsetrading"

Next Wednesday, four women and 15 men on the Crown Nominations Commission will gather for two days of prayer and horsetrading to replace Rowan Williams as archbishop of Canterbury.

2012 September 20, Andrew Brown, “Archbishop of Canterbury succession race begins in earnest”, in The Guardian (online)‎

It will still be weeks before the new Italian parliament is seated and a new government is formed, leaving plenty of time for political machinations and horse trading in a coalition with major differences.

2022 September 25, Jason Horowitz, “Giorgia Meloni Wins Voting in Italy, in Breakthrough for Europe’s Hard Right”, in The New York Times‎