A few weeks ago, Chris Christie called up a former Republican presidential candidate and asked for some advice: Should he mount a second presidential run in 2024 — facing off against former President Donald Trump for a second time — or was the idea just plain crazy?
Taking down the most dominant Republican political figure in a generation, the 60-year-old former two-term New Jersey governor has calculated, requires taking direct aim at Trump’s weaknesses — his questionable character, his…