They'll also find out whether big-dollar donors are heeding President Barack Obama's belated call for supporting an independent political action committee.
Financial reports due Friday to the Federal Election Commission will show how much red ink the campaigns are bleeding -- or, in the case of the Republican super PAC American Crossroads, how much money some groups have been stuffing in their war chests.
Much has changed since the March 6 Super Tuesday contests, when Republican voters in six out of 10 states chose Mitt Romney as their preferred nominee to compete against Obama. Romney is now the GOP's presumptive nominee.
