Several media outlets had named Lamb the victor in the race in the days since the election, but Saccone's campaign initially declined to concede in the traditionally red district.
Lamb, 33, claimed the seat by about 750 votes in a Republican-held district that President Donald Trump won by nearly 20 percentage points just 16 months ago.
"He congratulated him and wished him luck", Branstetter said.
Lamb tweeted out that he had spoken to Saccone and was ready to get to work in Congress. But it could be several days before Lamb is sworn into office.
In this March 14, 2018, file photo, 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. In a statement, Saccone said that, while fewer than 800 votes separated them, the people of the 18th District "deserve to have a voice representing them in Congress". Saccone is running in a new, more Republican district in Pennsylvania's southwest corner that retains much of the territory he and Lamb campaigned in for the last four months. Besides Saccone, Republican state Sen.
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It also comes amid rising security concerns that derailed its partnership with AT&T (T) to carry its Mate 10 Pro mobile device. Best Buy's decision comes amid growing suspicion of China-based technology companies by US trade and intelligence officials.
But these challenges are likely a moot point given Saccone's concession.
The race between Lamb, who often took moderate positions compared to his Democratic colleagues, and Saccone was a tight one.
Saccone, a Trump-backed Republican from Elizabeth, phoned Lamb about 6:30 p.m., Saccone campaign spokesman Bob Branstetter told the Tribune-Review.
The key takeaway for other Democrats who are running this year? Lamb successfully harnessed the organizing power of a substantial number of the district's union-members, earning the endorsement of the AFL-CIO, a strategy that served the district's previous representative, Republican Rep. Tim Murphy, well in his eight election victories. He has filed to run in Pennsylvania's 17th district which was redrawn under a new state district map. Expect a flood of Conor Lambs in 2018.