On the day before the Wisconsin primary, an Emerson College Polling Society poll shows Ted Cruz maintaining a 5 point lead over Donald Trump. On the Democratic side, Bernie Sanders has an 8 point lead over Hillary Clinton.The ECPS poll of likely Republican primary voters fits squarely with the results of other polls tracked by Real Clear Politics. RCP currently has Cruz up 6.5 in its latest average of polls (which includes the Emerson poll). Cruz wins with men (43%-36%) and women (35%-32%) and leads Trump strongly among Republicans (46%-31%). That last result tracks with Trump’s favorability among Republicans...