National politicians are coming to Texas to make their case ahead of Election Day tomorrow. Former president Bill Clinton is in Laredo and Edinburg today to rally Democrats in support of congressional candidates Henry Cuellar and Michelle Vallejo. First lady Jill Biden was in Houston this past weekend, while Republican House Minority Leader Kevin McCarthy and former Speaker Newt Gingrich looked to gain G-O-P support in the border city of McAllen. Polling places will open tomorrow at seven a.m. and close at seven p.m.