Katie McGinty, the Democratic candidate for U.S. Senate, is agreeing to join two debates in October after Republican incumbent Pat Toomey pushed for a four-debate schedule.

The McGinty campaign said Monday that she would join debates on October 17 at Pittsburgh TV station KDKA and October 24 at Philadelphia TV station WPVI. It said both debates will be available for broadcast statewide.

The campaign had no immediate explanation for why she would not join debates on October 6 at Bucknell University and on October 13 in Harrisburg.

"We understand why she prefers to hide her record of supporting massive middle-class tax increases and dangerous sanctuary cities from voters, but it's a real disservice to the people of Pennsylvania," said Ted Kwong, a Toomey for Senate spokesman.

In 2010, Toomey joined two debates with Democrat Joe Sestak before the election that Toomey won.

Polls show the Pennsylvania race is virtually tied, and the winner of the Nov. 8 election could tip control of the U.S. Senate.