Mitt Romney to roll up delegates in 5 GOP primaries [Milt predicts total win] David Lightman and Erika Bolstad ASTON, Pa. — "Mitt Romney is expected to win all five Republican presidential primaries Tuesday, but Pennsylvania and Connecticut will be watched closely for signs that he could headed for trouble in those states in November. A weaker-than-expected showing in Pennsylvania against Rick Santorum, who represented the state in the U.S. Senate from 1995 to 2007, would raise fresh questions about Romney’s appeal in a general-election swing state. ... Connecticut also will offer some clues about Romney’s November prospects there. The...