Among GOP rivals to Donald Trump and Ted Cruz, Marco Rubio has most cash

Marco Rubio, Jeb Bush, John Kasich, and Chris Christie, the four Republican candidates in a showdown for their party’s traditional supporters, closed last year with about as much money in the bank combined as Ted Cruz, the conservative insurgent they hope to topple. Then there’s Donald Trump, the celebrity businessman who has just begun to flex his billion-dollar bank account, lending his campaign $10.8 million from his personal wealth late last year. The Republican candidates seeking to challenge Trump and…