Simplify the argument --
Smith has >=20 Senators support --> White will consider another committee ---------(1)
Smith has <20 Senators support --> White will study Smith's past voting record --> finds voting record out of favor with today's voters --> her chances of capturing the chairmanship would be increased ---> White will announce interest in chairmanship -------------(2)
Smith has <20 Senators support --> White will study Smith's past voting record --> finds
...
Smith has >=20 Senators support --> White will consider another committee ---------(1)
Smith has <20 Senators support --> White will study Smith's past voting record --> finds voting record out of favor with today's voters --> her chances of capturing the chairmanship would be increased ---> White will announce interest in chairmanship -------------(2)
Smith has <20 Senators support --> White will study Smith's past voting record --> finds
...



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