running mate 
noun chiefly North American
1An election candidate for the lesser of two closely associated political offices.His running mate as vice presidential candidate would also be announced....
- He is his vice presidential running mate for the election in November.
- He is also the son of the vice-presidential running mate of a SEP presidential candidate.
2A horse entered in a race in order to set the pace for another horse from the same stable, which is intended to win.He has a record of 2.15 with a running mate.
- profile machine
- profile perdu
- profile piece
- profiler
- profile shot
- profile wing
- profilin
- profiling
- profiling machine
- profilist
- profilmic
- profilograph
- profilometer
- profilometric
- profilometry
- profil perdu
- profinite
- Profintern
- profit
- profitability
- profitable
- profitableness
- profitably
- profit and loss account
- profit a prendre