u.s. senate republicans legislation overhaul obamacare hit roadblocks almost soon unveil opposition 48 democratic independent senators four conservative republican lawmakers well skepticism several republicans win approval bill release thursday senate majority leader mitch mcconnell afford lose two republican vote event deadlocked 50-50 vote republican vice president vote break tie tally republican senators stand bill present form possible amendments base statements interview lawmakers thursday friday oppose five senators rand paul kentucky ron johnson wisconsin ted cruz texas mike lee utah dean heller nevada supportive four senators richard burr north carolina three members senate republican leadership john cornyn texas john thune south dakota john barrasso wyoming undecided lean yes four senators patrick toomey pennsylvania richard shelby alabama lamar alexander tennessee johnny isakson georgia undecided 10 senators shelley moore capito west virginia bill cassidy louisiana marco rubio florida susan collins maine rob portman ohio lisa murkowski alaska jam risch idaho john mccain arizona thom tillis north carolina lindsey graham south carolina factbox republican u.s. senators stand healthcare bill