In the UK, most people can expect to be canvassed at home, in the form of party volunteers knocking on their door and trying to have a conversation with them in order to persuade them to vote for their party. This is especially likely if the voter is in a marginal seat, and less likely if they belong to a political party; as parties have pretty good data on these statistics and prefer to use their resources in order to maximize return. This type of campaigning is also preferred due to the strict limits on campaign spending which means that unpaid volunteers knocking on doors is a cheap way to get the message out.
It also occurs on election day itself - ensuring that voters, especially the elderly, can get out to their polling station.
To what extent does this happen in the US? I would expect that it happens rather less, given the relative tribal nature of the political system, meaning volunteers are unlikely to change someone’s mind on the doorstep. Is this correct? What other factors influence the amount of this type of campaigning in the US? Are there any regulations governing this?