change of the tide rip

[Itasan]

In Japanese, something like these is said:
1. The ruling party secretary-general's bribery case has changed the current rip in favor of the opposition party.
2. The current rip has changed because of the ruling party secretary-general's bribery case.

Do they work in English? If not, are there any similar expressions in English?
Thank you.

[Tdol]

I'd use tide rather than rip, but trend sounds more natural

[Itasan]

Thank you very much, tdol.