I'd say, "Vote for the people you distrust the least, and watch them like a hawk." You can't trust anyone with power, because they will use the power you give them to get more; why would we want to give them the tools to do that if they don't absolutely need them? Governments haven't needed to know all my purchases, my movements, my financial details, who I talk to, what news I read --- none of this is necessary to make and enforce sensible laws, provide for national defense, or coordinate international and intranational trade. They want this data so they have more control, i.e. power.
Government is/will be the first/last institution that can defend you and your identity.
Vote the people you trust.