What is "recanvassing"

Usage examples of "recanvassing".

Now, I've got lists of recanvassing addresses for everyone but Bleichert and Blanchard.

I spent all day yesterday and most of the evening recanvassing Central Avenue, and I couldn’t find any other eyewitnesses who saw Goines with the tall, grayhaired man.

After canvassing and recanvassing witnesses, acquaintances, associates, total strangers who might possibly have seen or heard something--anything--I started expanding the search.