Erick Bennett, a Portland political consultant and founder of the conservative Maine Equal Rights Center, announced Monday that he’ll run as a primary challenger to U.S. Sen. Susan Collins. But in an interview, Bennett seemed pretty ho-hum about whether or not he really wants to serve in the Senate. He said the primary challenge is not about him, but about facilitating a conversation among Republicans about Collins’ voting record. Bennett said he’d asked several prominent Republicans — he hinted at CD2 contenders Kevin Raye and Bruce Poliquin — to run against Collins, but no one was interested. So the mantle...