Senate Republicans are feeling frustrated and disappointed by former President Trump’s debate performance and his inability to resist taking the bait from Vice President Harris on side issues such as people leaving his rallies early. GOP lawmakers fear Trump’s irate rants onstage will be the main takeaway for many undecided voters who tuned into the 90-minute debate, and some senators are hesitating over whether Trump should even agree to another one. GOP senators are also distancing themselves from Trump’s false claim that he won the 2020 election, which he repeated Tuesday evening. And they feel bewildered by his wild claim...