A Fox News segment went off the rails on Sunday after conservative pundit Ben Domenech shouted down left-leaning contributor Laura Fink. During a Fox News Media Buzz program segment, host Howard Kurtz pointed out that the network’s latest poll suggested Vice President Kamala Harris and former President Donald Trump were essentially tied in swing states. “Trump is a fundamentally weak candidate because he is undisciplined,” Fink explained. “He cannot execute on message. He rambles like an older gentleman for 90 minutes in his speech here and his speech there. He talks about whatever floats thro…