“It’s been over the top, the number of people who have been calling me,” Harris told the Pittsburgh Post-Gazette.
Welch has not made a public statement on his filing.
“The overwhelming support that we have seen over the past several weeks is a reflection of the enthusiasm that voters [are] feeling about the direction of the city,” Peduto’s campaign manager Keyva Clark said in a statement.
Over the weekend, Peduto was endorsed by the Allegheny County party in his bid for re-election, although Harris pulled 40% of the vote. Welch did not compete.
The campaigns will begin going over their opponent’s petitions looking for any discrepancies that could get them removed by the ballot.
No Republicans filed to run.