"I can't express the sadness that all Pennsylvanians feel for what happened today. My heart breaks for the members of the Jewish community. … Any attack on one community of faith in Pennsylvania is an attack on every community of faith in Pennsylvania. … We must take action to prevent these tragedies in the future.  We simply cannot accept this violence as a normal part of American life. These senseless acts of violence are not who we are as Pennsylvanians. They're not who we are as Americans." — Gov. Wolf

"Tracy and I offer our condolences to the families of the victims whose lives were lost today in Squirrel Hill. This type of violence is sickening and has no place in our society. … We salute the bravery and swift response of local law enforcement in containing the suspect and we will suspend campaign activity today so we can continue to monitor the situation and provide whatever assistance is necessary." — Scott Wagner, Republican candidate for governor, on Twitter

"Today, our Commonwealth and country stand in solidarity with the Jewish community of Pittsburgh. We mourn the loss of 11 lives at Tree of Life Synagogue in Squirrel Hill and pray for their families. We are also thankful for the work being done by federal, state, and local law enforcement who also responded and are assisting in the investigation. People across our nation are praying for the officers who were injured today. We stand with the victims and their families in this time of tragedy. Those of us in public office have an obligation to take actions that can reduce the likelihood of mass shootings. We must come together as a nation and meet this challenge."  — U.S. Sen. Bob Casey, (D., Pa.), on Twitter

"My prayers are with everyone in Squirrel Hill and the first responders on scene. Initial reports are sickening. Please heed advice of law enforcement and stay safe. Awful." — Lou Barletta, Pennsylvania Republican candidate for U.S. Senate, on Twitter

"Synagogues and other places of worship are safe havens where communities come together to celebrate, pray, and reflect. What happened today at the Tree of Life Synagogue was a cowardly act of violence fueled by hate and anti-Semitism. My prayers are with the victims, their families and friends, the members of the Tree of Life Synagogue, and the city of Pittsburgh. I greatly appreciate the actions of the first responders who tended to the wounded and apprehended the shooter."  — U.S. Sen. Pat Toomey, (R., Pa.), on Twitter

"When any one community is targeted with violence, intimidation, or discrimination it threatens all of us and must be condemned. That this attack took place in a house of worship where congregants seek safety and peace is particularly perverse and is an attempt to intimidate people of faith. That attempt will never succeed. I'm proud to stand with the brave men and women in law enforcement who put their lives at risk to save others today. I am profoundly grateful to them for their bravery."  — Pa. Attorney General Josh Shapiro

"We condemn, in the strongest possible terms, this despicable act of violence perpetrated by a gutless coward. And we stand with all members of the Jewish community and all Pennsylvanians at this terrible time. Our whole family has attended services at various synagogues throughout our lives, just as these victims did today. We should not and cannot accept a society where innocent people feel that they put their lives at risk by attending a worship service." — Jeff Bartos, Republican candidate for lieutenant governor

"I'm devastated, heartbroken, and angry. I will leave the politics aside and just say, it's unacceptable that we've yet again lost lives today to dangerous weapons; it's unacceptable that this happened to people in their place of worship; it's unacceptable that we do nothing about it. As Gisele and I drive back from Philly in the wake of all this, all I can say is, I'm coming home." — John Fetterman, Democratic candidate for lieutenant governor