Three more polls of likely voters in North Carolina and two of likely voters in Indiana were released today. In North Carolina, Barack Obama’s lead over Hillary Clinton continues to be measured from very large to very small:

Zogby: Obama 51, Clinton 37
American Research Group: Obama 50, Clinton 42
Insider Advantage: Obama 47, Clinton 43

Zogby is the only pollster to have shown the race to be in the double-digits for Obama during the past week. ARG has gradually shown a slight deterioration in Obama’s lead from 13 points in late March, to 11 points in mid-April, to 10 points ten days ago, to 9 points last Thursday, to 8 points through this past weekend. If Obama continues to receive 90 percent of the projected black vote in North Carolina, he should carry the state.

In Indiana, Clinton has been leading in all polls in recent days, with the exception of the final Zogby tracking poll:

Zogby: Obama 45, Clinton 43
American Research Group: 53, Obama 45

Smart Politics will blog live Tuesday night as the primary results from both states come in. In addition to real-time reporting of results and media watchdog commentary, Smart Politics will examine the impact of the results on the upcoming primary contests. Live blogging will commence at 6 p.m. CST when polls close in Indiana.