Incumbents tend to be returned and excluding those who died in office and the VPs who succeed them (as they never won the election in the first place) there have only been 3 one term presidents in the past hundred years, Hoover, Carter, Bush I. I think he’s performed better than his critics said he would, the US economy is fairing well and the sky hasn’t fallen and supporters will point to the earlier warnings that have failed to materialise as proof that its all just fake news. The impeachment is going to be thrown out of the senate. Trump supporters will see this as strength and will like that it’s not been a fair trial. finally the Iran thing is going to play in his favour, nothing Americans like more than supporting the commander in chief going to kill some ‘terrorists’. In all I think the current price is good value, although there’s potential for it to lengthen depending on the democratic candidate.