Three of the four challengers who the House Republicans’ political arm last month said could oust Democratic incumbents this fall struggled to raise money after winning their primaries in June, according to new Federal Election Commission reports. The exception was former state Senate Republican Leader Tom Kean Jr., facing off against Rep. Tom Malinowski, D-7th Dist., in a rerun of their 2020 contest. But yacht company owner Bob Healey Jr., facing Rep. Andy Kim, D-3rd Dist;, former investment banker Frank Pallotta, in a rematch with Rep. Josh Gottheimer, D-5th Dist.; and former Passaic County …