Campaign Funds at Center of Wisconsin Race
US Senate race in Wisconsin between Democratic incumbent Russell D Feingold and his Republican rival, Democratic Repr Mark W Neumann, discussed; Federal election financing reform is a major factor in race: Feingold is co-author of bill that would change campaign finance laws, in part by eliminating 'soft money' spent by local or national orgns on behalf of but supposedly independent of political candidates; Sen Mitch McConnell y of Kentucky is bill's arch enermy, and he also happens to be chmn of National Republican Senatorial Committee, which has plenty of money to spend; as result, at least a million senatorial committee dollars, and maybe twice as much, has cascaded into Wisconsin in recent months to buy television commercials promoting Neumann; if Feingold wins, cmapaign finance reform will get a lift; if he loses, reform cause will suffer major setback; photos of Feingold and Neumann (M)
