Even so, Tuesday's voting had local impact.
Other races of note:
—In Alabama, the GOP's internal squabbles played out in the special congressional runoff primary election. Bradley Byrne, a veteran politician and the choice of the GOP establishment, won against tea party favorite Dean Young. The race was the first test of the U.S. Chamber of Commerce's promise to try to influence primaries. The group had pumped at least $200,000 into supporting Byrne.
—Big city mayors: In New York, de Blasio cruised to victory over Republican Joe Lhota after Michael Bloomberg's 12-year tenure. Atlanta, Boston, Detroit, Minneapolis, Seattle and other cities also chose mayors.
—Colorado: Voters agreed to tax marijuana at 25 percent and apply the proceeds to regulating the newly legalized drug and building schools. And 10 rural counties refused to approve secession from the state. One county narrowly voted to secede, but it was a symbolic gesture.
Elliott reported from Virginia. Associated Press Director of Polling Jennifer Agiesta, and writers Bill Barrow and Christina Almeida Cassidy in Georgia, Kristen Wyatt in Colorado, Chris Grygiel in Washington state, Corey Williams in Michigan, Thomas Beaumont in Iowa and Nedra Pickler in Washington contributed to this report.