PA race tighter-than-tight; Dem claims win, GOP hangs in

Conor Lamb, the Democratic candidate for the March 13 special election in Pennsylvania's 18th Congressional District celebrates with his supporters at his election night party in Canonsburg, Pa., early Wednesday, March 14, 2018. (AP Photo/Gene J. Puskar)

A razor's edge separated Democrat Conor Lamb and Republican Rick Saccone early Wednesday in their closely watched special election in Pennsylvania, where a surprisingly strong bid by first-time candidate Lamb severely tested Donald Trump's sway in a GOP stronghold.

Lamb claimed victory before exuberant supporters after midnight, though many absentee ballots were still to be counted in the contest that has drawn national attention as a bellwether for the midterm elections in November when the Republican Party's House and Senate majorities are at risk.