Who was saying there wouldn't be another Republican president for decades?
I don't have specific names of posters for you, if that's what you want, but it happened an embarrassingly number of times.
I mean, I was pretty sure Hillary was going to win last year too, but I was also pretty sure we'd have another Republican president by at least 2024 in that case if not 2020. There were a handful of posters around during the campaign who thought Trump's loss would cement the GOP's unelectability at the presidential level for decades.
And I'm not saying Pence is a near-unbeatable juggernaut, I'm just trying to caution against this same kind of overconfidence people had last year. Just because Pence's ascendancy to the presidency would come through some scandalous thing like Trump resigning or being impeached does not mean he'd be a dead-on-arrival loser as soon as his own election came up.