Jeb Bush was a fundraising machine & Trump spend little n destroyed him. Ads are important for people with low name recognition & in close contests but no1 wins in such convincing fashion due to money.
Murphy has serious flaws. And Rubio is a strong performer among Hispanics as he looked way less racist & more understanding than any GOP Presidential candidate. He is also doing better among blacks than others probably. So his minority performance is giving him the edge.
But Feingold has shown that a strong progressive with guts, vision can be a real handful for the GOP!
Presidential races do not equal senate races. It's far easier to bury someone in a senate race.