I had discussed this with my doctor and he told me to completely abstain.

On the other hand, groups such as the Progressive Labor Party make a point of abstaining completely from elections.

In the baseball offseason between the 1992 and 1993 seasons, he completely abstained from the free agent market.

Fasting for Jews means completely abstaining from food and drink, including water.

Even using your argument of improbability, there's no reason to abstain completely.

McCallum announced soon thereafter that the incident prompted him to abstain completely from alcohol consumption.

It ought to be possible to spend the proposed sums of money on other things, for which reason we are completely abstaining from voting.