return to power
Refers to a political party or leader regaining control of the government after a period out of power.
The opposition party is aiming for a return to power in the next election.
His return to power was met with surprise by many citizens.
Refers to a change of government, often between different parties, while 政権復帰 specifically means a return to power by a previously ousted party or leader.
Means restoration of rights or status, and can be used in non-political contexts, whereas 政権復帰 is limited to political power.
Compound of 政権 (political power) and 復帰 (return, comeback).