2. Is there a ban on donations from foreign interests to candidates?

Article 8.4(4.1), Law on Financing of Political Organisations (Parties), the amended version of the law in force from 01.01.2020, Latvijas Vēstnesis, 114, 02.08.1995

All financial activities by a candidate are considered as financial activities of his/her respective nominating political party.

8.4(4.1) If a separate candidate has performed individual pre-election canvassing campaign, then the funds spent on this campaign shall be included in the pre-election expenses of the political organization (party) from whose submitted list of candidates this person is standing in the relevant elections.