adjective
bipartisan
bye-PAR-tih-zun/ˌbaɪˈpɑːrtɪzn/
Supported by or involving two political parties.
A bipartisan committee drafts the new transportation funding proposal.

Etymology
A partisan belongs to or supports a faction; the adjective came to mean “pertaining to a political party.” Adding “two” describes participation or support from two parties.
In context
senator coons is famous for working across the political aisle to find bipartisan solutions to pressing foreign policy challenges
More examples
- The measure passes with strong bipartisan support.
- Leaders call for a bipartisan response to the emergency.
- The report reflects a rare bipartisan agreement.
Similar words
- nonpartisan
- Avoids party affiliation rather than combining two parties.
- cross-party
- Can involve more than two political parties.