Are you not being a little early in your nomination of candidates?
Not if you believe in math, polling and demographics. You can call this the same way you can call elections after five percent of the vote is counted.
Cruz is dead. He is losing in his strongest states and even if he won those states, they assign delegates proportionally, so he would only get a few delegates over Trump even if he beat him by 5% in the voting. Rubio clearly can't score on Telfon Don. He makes good to great points but Trump's voters don't care. In order to consolidate the non-Trump vote, Cruz has to drop by Super Tuesday. If you look at polling, Trump could lock up pretty much everything he needs Tuesday. Will Cruz who was willing to shut down the government and have the US default on its debts willing to suspend his campaign before Tuesday so Rubio can compete with Trump? No.
Sanders has run a solid, popular campaign but Clinton has hit her stride, polls show that Sanders is not expanding his base and the unaffiliated part of the Democratic Party, economists like Krugman
for example, are turning against him. If you look at the endorsement race
, all those senators who served with both Sanders and Clinton have endorsed her. Sanders has three representatives who have endorsed him. Clinton has over 100. Just about every sitting Democratic governor has endorsed Clinton. It's a great insurgency, but it's not spreading. Obama likewise started small but he was able to grow into the mainstream. Sanders is not getting any traction.
So, yes it looks like you can call it now. There is still some action to be had, but once you start getting to 90+% probable, you have to face the music.