Trump's cries of 'rigged' system shifts blame for his losses

As top aides spent the week courting Republican insiders at a seaside resort in Florida, Donald Trump was busy railing against them.

Calling the Republican primary system "rigged" may seem counterproductive. Yet Trump's foot-stomping ahead of Tuesday's primaries in Delaware, Pennsylvania and three other states is a rallying cry to boost voter turnout and an appeal to voters who feel disenfranchised.

The "rigged" system also is a convenient scapegoat for Trump, taking the blame for any future losses instead of his outmaneuvered campaign.

Today, Trump told supporters at the Delaware State Fairgrounds that a big turnout in Tuesday's primary would help foil the party "bosses" he maintains are against him. A senior aide dismisses the idea that Trump's rhetoric makes it more difficult to build bridges with Republican leaders.