Probably the one with the presidency, house, senate, most of the media, and social media content moderation.
Which one sounds more like "planning to never lose an election again", the scheme where more people vote or the scheme where fewer people vote?
Including dead people ? </sarcasm>
I mean, that's silly — any political party would love single-party dominance.
Democrats want "more people voting" because their thesis is that most disengaged or non-voters would default Democrat. It's fine if you believe is that "more people voting is good for democracy" but it's not the reason that the Democrats are focused on getting more people ballots.